./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/or-05.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/or-05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc --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 c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 --- 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-5e519f3 [2022-11-02 20:56:57,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:56:57,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:56:57,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:56:57,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:56:57,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:56:57,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:56:57,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:56:57,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:56:57,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:56:57,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:56:57,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:56:57,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:56:57,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:56:57,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:56:57,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:56:57,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:56:57,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:56:57,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:56:57,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:56:57,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:56:57,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:56:57,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:56:57,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:56:57,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:56:57,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:56:57,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:56:57,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:56:57,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:56:57,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:56:57,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:56:57,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:56:57,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:56:57,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:56:57,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:56:57,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:56:57,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:56:57,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:56:57,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:56:57,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:56:57,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:56:57,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:56:57,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:56:57,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:56:57,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:56:57,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:56:57,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:56:57,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:56:57,169 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:56:57,170 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:56:57,170 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:56:57,170 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:56:57,175 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:56:57,183 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:56:57,183 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:56:57,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:56:57,184 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:56:57,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:56:57,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:56:57,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:56:57,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:56:57,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:56:57,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:56:57,185 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:56:57,186 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:56:57,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:56:57,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:56:57,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:56:57,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:56:57,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:56:57,189 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:56:57,189 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_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 [2022-11-02 20:56:57,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:56:57,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:56:57,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:56:57,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:56:57,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:56:57,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-bwb/or-05.c [2022-11-02 20:56:57,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/data/746e52de8/30fab614085f4330941f7fadf325f742/FLAG6c9eecad8 [2022-11-02 20:56:58,025 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:56:58,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/sv-benchmarks/c/termination-bwb/or-05.c [2022-11-02 20:56:58,030 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/data/746e52de8/30fab614085f4330941f7fadf325f742/FLAG6c9eecad8 [2022-11-02 20:56:58,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/data/746e52de8/30fab614085f4330941f7fadf325f742 [2022-11-02 20:56:58,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:56:58,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:56:58,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:58,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:56:58,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:56:58,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ae8619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58, skipping insertion in model container [2022-11-02 20:56:58,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:56:58,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:56:58,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:58,647 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:56:58,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:56:58,671 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:56:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58 WrapperNode [2022-11-02 20:56:58,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:56:58,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:58,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:56:58,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:56:58,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,702 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-02 20:56:58,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:56:58,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:56:58,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:56:58,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:56:58,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:56:58,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:56:58,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:56:58,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:56:58,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (1/1) ... [2022-11-02 20:56:58,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:58,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:58,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:56:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:56:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:56:58,863 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:56:58,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:56:58,946 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:56:58,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:56:58,952 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:56:58,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:58 BoogieIcfgContainer [2022-11-02 20:56:58,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:56:58,954 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:56:58,955 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:56:58,963 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:56:58,964 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:56:58,964 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:56:58" (1/3) ... [2022-11-02 20:56:58,965 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6553acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:56:58, skipping insertion in model container [2022-11-02 20:56:58,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:56:58,965 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:56:58" (2/3) ... [2022-11-02 20:56:58,965 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6553acea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:56:58, skipping insertion in model container [2022-11-02 20:56:58,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:56:58,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:58" (3/3) ... [2022-11-02 20:56:58,967 INFO L332 chiAutomizerObserver]: Analyzing ICFG or-05.c [2022-11-02 20:56:59,033 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:56:59,033 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:56:59,033 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:56:59,033 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:56:59,034 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:56:59,034 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:56:59,034 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:56:59,034 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:56:59,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:56:59,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:56:59,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:56:59,061 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:56:59,061 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:56:59,061 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:56:59,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:59,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:56:59,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:56:59,062 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:56:59,063 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:56:59,063 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:56:59,070 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 5#L20-2true [2022-11-02 20:56:59,070 INFO L750 eck$LassoCheckResult]: Loop: 5#L20-2true assume !!(main_~x~0#1 > 0); 8#L20true assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 5#L20-2true [2022-11-02 20:56:59,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,076 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-02 20:56:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433837299] [2022-11-02 20:56:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-02 20:56:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452492758] [2022-11-02 20:56:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-02 20:56:59,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:59,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505331715] [2022-11-02 20:56:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:56:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:56:59,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:56:59,292 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:56:59,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:56:59,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:56:59,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:56:59,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:56:59,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:56:59,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:56:59,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2022-11-02 20:56:59,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:56:59,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:56:59,330 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:56:59,501 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:56:59,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:56:59,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:59,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:59,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:56:59,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:56:59,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:56:59,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:59,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:59,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:59,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:56:59,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:56:59,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:56:59,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:56:59,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:59,649 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:56:59,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:56:59,650 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:56:59,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:56:59,650 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:56:59,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:56:59,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:56:59,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2022-11-02 20:56:59,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:56:59,651 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:56:59,652 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:56:59,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:56:59,725 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:56:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:59,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:59,736 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 [2022-11-02 20:56:59,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:56:59,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:56:59,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:56:59,749 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-02 20:56:59,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:56:59,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:56:59,761 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-02 20:56:59,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:56:59,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:56:59,788 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:56:59,788 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:56:59,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:56:59,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:59,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:56:59,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:56:59,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:56:59,812 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:56:59,812 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-02 20:56:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:56:59,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:59,856 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:56:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:59,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:56:59,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:59,926 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:56:59,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:59,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-02 20:57:00,000 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 [2022-11-02 20:57:00,002 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,042 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 8 states. [2022-11-02 20:57:00,044 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 [2022-11-02 20:57:00,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-11-02 20:57:00,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-02 20:57:00,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-02 20:57:00,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-02 20:57:00,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-11-02 20:57:00,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:00,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-02 20:57:00,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-02 20:57:00,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-02 20:57:00,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-02 20:57:00,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:57:00,062 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:57:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-02 20:57:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-02 20:57:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2022-11-02 20:57:00,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-02 20:57:00,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:57:00,085 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:57:00,085 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:57:00,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-02 20:57:00,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:00,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:57:00,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:57:00,086 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-02 20:57:00,086 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:57:00,087 INFO L748 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 72#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 78#L20-2 assume !!(main_~x~0#1 > 0); 77#L20 assume 1 == main_~y~0#1;main_~x~0#1 := (if (1 == main_~y~0#1 || 0 == main_~y~0#1) && 0 == 1 + main_~y~0#1 then main_~y~0#1 else (if 0 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1) then 1 + main_~y~0#1 else (if (1 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1)) || ((1 == main_~y~0#1 || 0 == main_~y~0#1) && 1 == 1 + main_~y~0#1) then 1 else ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1))));main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 73#L20-2 [2022-11-02 20:57:00,087 INFO L750 eck$LassoCheckResult]: Loop: 73#L20-2 assume !!(main_~x~0#1 > 0); 74#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 73#L20-2 [2022-11-02 20:57:00,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-02 20:57:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497996292] [2022-11-02 20:57:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:00,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497996292] [2022-11-02 20:57:00,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497996292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:00,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:00,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:00,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824559792] [2022-11-02 20:57:00,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:00,149 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 20:57:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-02 20:57:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081766785] [2022-11-02 20:57:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:00,187 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:57:00,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:57:00,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:57:00,188 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:57:00,188 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:57:00,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,188 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:57:00,188 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:57:00,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration2_Loop [2022-11-02 20:57:00,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:57:00,189 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:57:00,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:57:00,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:57:00,248 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:57:00,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:00,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:57:00,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:57:00,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:57:00,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:00,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:57:00,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:57:00,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:57:00,395 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:57:00,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:00,409 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:57:00,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:57:00,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:57:00,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:57:00,409 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:57:00,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:57:00,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:57:00,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration2_Loop [2022-11-02 20:57:00,410 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:57:00,410 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:57:00,411 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:57:00,485 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:57:00,486 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:57:00,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:00,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:57:00,496 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 [2022-11-02 20:57:00,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:57:00,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:57:00,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:57:00,509 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-02 20:57:00,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:57:00,513 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-02 20:57:00,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:57:00,534 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:57:00,538 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 20:57:00,538 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 20:57:00,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:00,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:57:00,542 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:57:00,542 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:57:00,542 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-02 20:57:00,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:57:00,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:00,583 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:57:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:57:00,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,630 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:57:00,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:00,648 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 [2022-11-02 20:57:00,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2022-11-02 20:57:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:57:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-02 20:57:00,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-02 20:57:00,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-02 20:57:00,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-02 20:57:00,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:00,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-11-02 20:57:00,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:00,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-11-02 20:57:00,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-02 20:57:00,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-02 20:57:00,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-11-02 20:57:00,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:57:00,666 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-02 20:57:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-11-02 20:57:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-02 20:57:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2022-11-02 20:57:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-02 20:57:00,668 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-02 20:57:00,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:00,672 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:00,680 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2022-11-02 20:57:00,680 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2022-11-02 20:57:00,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:00,685 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2022-11-02 20:57:00,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-02 20:57:00,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-02 20:57:00,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2022-11-02 20:57:00,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:57:00,685 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-11-02 20:57:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2022-11-02 20:57:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-02 20:57:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 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) [2022-11-02 20:57:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-11-02 20:57:00,691 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-02 20:57:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:00,693 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-02 20:57:00,694 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:57:00,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2022-11-02 20:57:00,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:00,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:57:00,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:57:00,699 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2022-11-02 20:57:00,699 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:57:00,699 INFO L748 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 155#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 156#L20-2 assume !!(main_~x~0#1 > 0); 157#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 165#L20-2 assume !!(main_~x~0#1 > 0); 161#L20 assume 1 == main_~y~0#1;main_~x~0#1 := (if (1 == main_~y~0#1 || 0 == main_~y~0#1) && 0 == 1 + main_~y~0#1 then main_~y~0#1 else (if 0 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1) then 1 + main_~y~0#1 else (if (1 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1)) || ((1 == main_~y~0#1 || 0 == main_~y~0#1) && 1 == 1 + main_~y~0#1) then 1 else ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1))));main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 162#L20-2 assume !!(main_~x~0#1 > 0); 159#L20 assume 1 == main_~y~0#1;main_~x~0#1 := (if (1 == main_~y~0#1 || 0 == main_~y~0#1) && 0 == 1 + main_~y~0#1 then main_~y~0#1 else (if 0 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1) then 1 + main_~y~0#1 else (if (1 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1)) || ((1 == main_~y~0#1 || 0 == main_~y~0#1) && 1 == 1 + main_~y~0#1) then 1 else ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1))));main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 164#L20-2 [2022-11-02 20:57:00,699 INFO L750 eck$LassoCheckResult]: Loop: 164#L20-2 assume !!(main_~x~0#1 > 0); 163#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 164#L20-2 [2022-11-02 20:57:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 1 times [2022-11-02 20:57:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210333415] [2022-11-02 20:57:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,729 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-11-02 20:57:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524856276] [2022-11-02 20:57:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:00,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 2 times [2022-11-02 20:57:00,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:00,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283060680] [2022-11-02 20:57:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:00,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:57:00,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283060680] [2022-11-02 20:57:00,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283060680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:00,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:00,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:57:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196903838] [2022-11-02 20:57:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:00,872 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:57:00,872 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:57:00,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:57:00,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:57:00,874 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:57:00,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:57:00,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:57:00,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration3_Loop [2022-11-02 20:57:00,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:57:00,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:57:00,877 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:57:00,933 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:57:00,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:57:00,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:00,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:00,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:57:00,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:57:00,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:57:01,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:01,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:01,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:01,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:57:01,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:57:01,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:57:01,090 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:57:01,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:01,094 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:57:01,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:57:01,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:57:01,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:57:01,094 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:57:01,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:01,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:57:01,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:57:01,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration3_Loop [2022-11-02 20:57:01,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:57:01,095 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:57:01,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:57:01,177 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:57:01,178 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:57:01,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:01,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:01,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:01,188 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 [2022-11-02 20:57:01,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:57:01,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:57:01,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:57:01,200 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-02 20:57:01,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:57:01,203 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-02 20:57:01,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:57:01,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:57:01,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:57:01,219 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:57:01,219 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:57:01,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:57:01,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:01,227 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:01,233 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:57:01,233 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:57:01,233 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:57:01,233 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-02 20:57:01,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:57:01,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:01,272 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:57:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,323 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:01,341 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 [2022-11-02 20:57:01,342 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,357 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2022-11-02 20:57:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:57:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-02 20:57:01,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-02 20:57:01,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:01,360 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:57:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,423 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-11-02 20:57:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:01,468 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 [2022-11-02 20:57:01,468 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2022-11-02 20:57:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:57:01,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-02 20:57:01,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-02 20:57:01,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:01,484 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 20:57:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:01,543 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:57:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:01,556 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 [2022-11-02 20:57:01,557 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,567 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 4 states. [2022-11-02 20:57:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 20:57:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-02 20:57:01,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-02 20:57:01,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:01,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2022-11-02 20:57:01,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:01,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2022-11-02 20:57:01,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:57:01,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-11-02 20:57:01,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 20:57:01,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2022-11-02 20:57:01,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-02 20:57:01,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-02 20:57:01,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2022-11-02 20:57:01,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:57:01,571 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-11-02 20:57:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2022-11-02 20:57:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2022-11-02 20:57:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-11-02 20:57:01,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-11-02 20:57:01,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-11-02 20:57:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:57:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:57:01,573 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-11-02 20:57:01,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:01,579 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2022-11-02 20:57:01,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2022-11-02 20:57:01,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:01,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2022-11-02 20:57:01,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-02 20:57:01,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-02 20:57:01,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2022-11-02 20:57:01,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:01,580 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-02 20:57:01,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2022-11-02 20:57:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2022-11-02 20:57:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-02 20:57:01,581 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-02 20:57:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:57:01,582 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-02 20:57:01,582 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:57:01,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2022-11-02 20:57:01,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-02 20:57:01,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:57:01,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:57:01,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-02 20:57:01,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-02 20:57:01,584 INFO L748 eck$LassoCheckResult]: Stem: 345#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 346#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0; 347#L20-2 assume !!(main_~x~0#1 > 0); 348#L20 assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 350#L20-2 [2022-11-02 20:57:01,584 INFO L750 eck$LassoCheckResult]: Loop: 350#L20-2 assume !!(main_~x~0#1 > 0); 349#L20 assume 1 == main_~y~0#1;main_~x~0#1 := (if (1 == main_~y~0#1 || 0 == main_~y~0#1) && 0 == 1 + main_~y~0#1 then main_~y~0#1 else (if 0 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1) then 1 + main_~y~0#1 else (if (1 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1)) || ((1 == main_~y~0#1 || 0 == main_~y~0#1) && 1 == 1 + main_~y~0#1) then 1 else ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1))));main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 350#L20-2 [2022-11-02 20:57:01,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 2 times [2022-11-02 20:57:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:01,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055337503] [2022-11-02 20:57:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-02 20:57:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:01,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217038584] [2022-11-02 20:57:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 3 times [2022-11-02 20:57:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:01,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517354251] [2022-11-02 20:57:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:01,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:57:01 BoogieIcfgContainer [2022-11-02 20:57:01,728 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:57:01,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:57:01,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:57:01,729 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:57:01,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:56:58" (3/4) ... [2022-11-02 20:57:01,732 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:57:01,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:57:01,733 INFO L158 Benchmark]: Toolchain (without parser) took 3289.58ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 59.1MB in the beginning and 76.7MB in the end (delta: -17.7MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-11-02 20:57:01,733 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:57:01,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.22ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 77.7MB in the end (delta: -18.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:57:01,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.63ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:57:01,737 INFO L158 Benchmark]: Boogie Preprocessor took 24.41ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.6MB in the end (delta: 829.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:57:01,737 INFO L158 Benchmark]: RCFGBuilder took 225.65ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 66.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:57:01,738 INFO L158 Benchmark]: BuchiAutomizer took 2773.82ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 76.7MB in the end (delta: -10.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-11-02 20:57:01,738 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 123.7MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:57:01,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 102.8MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.22ms. Allocated memory is still 102.8MB. Free memory was 58.9MB in the beginning and 77.7MB in the end (delta: -18.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.63ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 76.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.41ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 75.6MB in the end (delta: 829.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.65ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 66.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2773.82ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 76.7MB in the end (delta: -10.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 123.7MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 39 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf93 smp100 dnf172 smp100 tf103 neg96 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 85ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Unable to decide termination Buchi Automizer cannot decide termination for the following lasso because it contains the following overapproximations. Overapproximations C: y|(y+1) [21] (Reason bitwiseOr) Lasso Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" Loop: "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;main_~x~0#1 := (if (1 == main_~y~0#1 || 0 == main_~y~0#1) && 0 == 1 + main_~y~0#1 then main_~y~0#1 else (if 0 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1) then 1 + main_~y~0#1 else (if (1 == main_~y~0#1 && (1 == 1 + main_~y~0#1 || 0 == 1 + main_~y~0#1)) || ((1 == main_~y~0#1 || 0 == main_~y~0#1) && 1 == 1 + main_~y~0#1) then 1 else ~bitwiseOr(main_~y~0#1, 1 + main_~y~0#1))));main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" RESULT: Ultimate could not prove your program: unable to determine termination [2022-11-02 20:57:01,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/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 Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dd62f82-6bae-4b11-b59d-eab0a79e41b5/bin/uautomizer-Dbtcem3rbc/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN