./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.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_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/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_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/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_473003f9-7dbb-4c50-abc1-9b0901009670/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 c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 --- 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 20:53:11,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:53:11,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:53:11,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:53:11,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:53:11,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:53:11,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:53:11,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:53:11,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:53:11,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:53:11,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:53:11,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:53:11,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:53:11,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:53:11,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:53:11,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:53:11,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:53:11,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:53:11,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:53:11,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:53:11,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:53:11,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:53:11,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:53:11,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:53:11,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:53:11,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:53:11,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:53:11,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:53:11,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:53:11,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:53:11,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:53:11,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:53:11,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:53:11,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:53:11,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:53:11,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:53:11,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:53:11,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:53:11,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:53:11,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:53:11,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:53:11,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:53:11,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:53:11,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:53:11,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:53:11,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:53:11,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:53:11,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:53:11,445 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:53:11,446 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:53:11,446 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:53:11,446 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:53:11,446 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:53:11,446 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:53:11,447 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:53:11,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:53:11,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:53:11,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:53:11,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:53:11,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:53:11,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:53:11,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:53:11,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:53:11,448 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:53:11,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:53:11,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:53:11,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:53:11,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:53:11,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:53:11,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:53:11,451 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:53:11,451 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_473003f9-7dbb-4c50-abc1-9b0901009670/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 [2022-11-02 20:53:11,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:53:11,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:53:11,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:53:11,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:53:11,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:53:11,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-02 20:53:11,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/data/5da066d9a/d0254e29bb8d4899b35baf268d6bb0f3/FLAG5c973b8ee [2022-11-02 20:53:12,305 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:53:12,306 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-02 20:53:12,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/data/5da066d9a/d0254e29bb8d4899b35baf268d6bb0f3/FLAG5c973b8ee [2022-11-02 20:53:12,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/data/5da066d9a/d0254e29bb8d4899b35baf268d6bb0f3 [2022-11-02 20:53:12,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:53:12,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:53:12,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:12,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:53:12,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:53:12,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:12" (1/1) ... [2022-11-02 20:53:12,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459a2305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:12, skipping insertion in model container [2022-11-02 20:53:12,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:12" (1/1) ... [2022-11-02 20:53:12,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:53:12,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:53:12,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:12,991 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:53:13,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:13,025 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:53:13,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13 WrapperNode [2022-11-02 20:53:13,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:13,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:13,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:53:13,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:53:13,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,059 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-02 20:53:13,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:13,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:53:13,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:53:13,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:53:13,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,086 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:53:13,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:53:13,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:53:13,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:53:13,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:53:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:13,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:53:13,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:53:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:53:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:53:13,258 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:53:13,260 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:53:13,307 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:53:13,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:53:13,313 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:53:13,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:13 BoogieIcfgContainer [2022-11-02 20:53:13,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:53:13,316 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:53:13,316 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:53:13,320 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:53:13,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:53:13,321 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:53:12" (1/3) ... [2022-11-02 20:53:13,321 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@166dfcfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:53:13, skipping insertion in model container [2022-11-02 20:53:13,321 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:53:13,322 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (2/3) ... [2022-11-02 20:53:13,322 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@166dfcfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:53:13, skipping insertion in model container [2022-11-02 20:53:13,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:53:13,322 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:13" (3/3) ... [2022-11-02 20:53:13,323 INFO L332 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-02 20:53:13,371 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:53:13,371 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:53:13,371 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:53:13,372 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:53:13,372 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:53:13,372 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:53:13,372 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:53:13,372 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:53:13,377 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 20:53:13,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:53:13,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:53:13,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:53:13,400 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:53:13,400 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:53:13,401 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:53:13,401 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 20:53:13,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:53:13,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:53:13,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:53:13,403 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:53:13,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:53:13,410 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_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3#L18true assume !(main_~k~0#1 >= 0);main_~i~0#1 := -1; 8#L23-1true [2022-11-02 20:53:13,411 INFO L750 eck$LassoCheckResult]: Loop: 8#L23-1true assume !!(main_~i~0#1 >= 0);main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 8#L23-1true [2022-11-02 20:53:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-11-02 20:53:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022326704] [2022-11-02 20:53:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:53:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2022-11-02 20:53:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327754857] [2022-11-02 20:53:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,532 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:53:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2022-11-02 20:53:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669416936] [2022-11-02 20:53:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:53:13,609 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 20:53:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:53:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669416936] [2022-11-02 20:53:13,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669416936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:53:13,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:53:13,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:53:13,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553619179] [2022-11-02 20:53:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:53:13,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:53:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:53:13,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:53:13,703 INFO L87 Difference]: Start difference. 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, 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 20:53:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:53:13,722 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-02 20:53:13,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-02 20:53:13,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:53:13,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 4 states and 4 transitions. [2022-11-02 20:53:13,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-02 20:53:13,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-11-02 20:53:13,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4 transitions. [2022-11-02 20:53:13,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:53:13,730 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-02 20:53:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 4 transitions. [2022-11-02 20:53:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2022-11-02 20:53:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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 20:53:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2022-11-02 20:53:13,757 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-02 20:53:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:53:13,763 INFO L428 stractBuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-02 20:53:13,763 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:53:13,763 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 4 transitions. [2022-11-02 20:53:13,763 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:53:13,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:53:13,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:53:13,764 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:53:13,764 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:53:13,765 INFO L748 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 31#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L18 assume main_~k~0#1 >= 0; 29#L23-1 [2022-11-02 20:53:13,765 INFO L750 eck$LassoCheckResult]: Loop: 29#L23-1 assume !!(main_~i~0#1 >= 0);main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 29#L23-1 [2022-11-02 20:53:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,766 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-02 20:53:13,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768881669] [2022-11-02 20:53:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:53:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 2 times [2022-11-02 20:53:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214193578] [2022-11-02 20:53:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:53:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:53:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 925614, now seen corresponding path program 1 times [2022-11-02 20:53:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:53:13,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823401336] [2022-11-02 20:53:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:53:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:53:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:53:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:53:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:53:13,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:53:13 BoogieIcfgContainer [2022-11-02 20:53:13,868 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:53:13,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:53:13,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:53:13,869 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:53:13,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:53:13" (3/4) ... [2022-11-02 20:53:13,872 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:53:13,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:53:13,905 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:53:13,906 INFO L158 Benchmark]: Toolchain (without parser) took 1180.69ms. Allocated memory is still 132.1MB. Free memory was 92.6MB in the beginning and 69.1MB in the end (delta: 23.4MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,907 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:53:13,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.25ms. Allocated memory is still 132.1MB. Free memory was 92.4MB in the beginning and 109.0MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.67ms. Allocated memory is still 132.1MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:53:13,909 INFO L158 Benchmark]: Boogie Preprocessor took 21.67ms. Allocated memory is still 132.1MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,909 INFO L158 Benchmark]: RCFGBuilder took 223.74ms. Allocated memory is still 132.1MB. Free memory was 106.9MB in the beginning and 98.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,910 INFO L158 Benchmark]: BuchiAutomizer took 552.54ms. Allocated memory is still 132.1MB. Free memory was 98.5MB in the beginning and 70.7MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,911 INFO L158 Benchmark]: Witness Printer took 36.39ms. Allocated memory is still 132.1MB. Free memory was 70.7MB in the beginning and 69.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:53:13,915 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory is still 109.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.25ms. Allocated memory is still 132.1MB. Free memory was 92.4MB in the beginning and 109.0MB in the end (delta: -16.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.67ms. Allocated memory is still 132.1MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.67ms. Allocated memory is still 132.1MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.74ms. Allocated memory is still 132.1MB. Free memory was 106.9MB in the beginning and 98.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 552.54ms. Allocated memory is still 132.1MB. Free memory was 98.5MB in the beginning and 70.7MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 36.39ms. Allocated memory is still 132.1MB. Free memory was 70.7MB in the beginning and 69.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. 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 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:53:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_473003f9-7dbb-4c50-abc1-9b0901009670/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)