./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY --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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:30:25,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:30:25,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:30:25,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:30:25,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:30:25,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:30:25,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:30:25,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:30:25,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:30:25,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:30:25,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:30:25,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:30:25,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:30:25,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:30:25,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:30:25,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:30:25,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:30:25,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:30:25,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:30:25,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:30:25,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:30:25,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:30:25,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:30:25,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:30:25,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:30:25,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:30:25,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:30:25,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:30:25,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:30:25,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:30:25,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:30:25,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:30:25,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:30:25,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:30:25,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:30:25,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:30:25,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:30:25,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:30:25,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:30:25,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:30:25,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:30:25,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 08:30:25,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:30:25,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:30:25,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:30:25,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:30:25,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:30:25,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:30:25,413 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:30:25,413 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 08:30:25,413 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 08:30:25,414 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 08:30:25,415 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 08:30:25,416 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 08:30:25,416 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 08:30:25,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:30:25,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:30:25,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:30:25,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:30:25,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 08:30:25,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 08:30:25,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 08:30:25,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:30:25,419 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 08:30:25,419 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:30:25,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 08:30:25,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:30:25,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:30:25,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:30:25,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:30:25,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:30:25,425 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 08:30:25,425 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_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2021-11-07 08:30:25,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:30:25,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:30:25,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:30:25,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:30:25,820 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:30:25,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-11-07 08:30:25,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/data/7eb9fbcc7/0f3a26f321b04ab5b206916401c89f89/FLAG8cbde0c1f [2021-11-07 08:30:26,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:30:26,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-11-07 08:30:26,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/data/7eb9fbcc7/0f3a26f321b04ab5b206916401c89f89/FLAG8cbde0c1f [2021-11-07 08:30:26,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/data/7eb9fbcc7/0f3a26f321b04ab5b206916401c89f89 [2021-11-07 08:30:26,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:30:26,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:30:26,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:30:26,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:30:26,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:30:26,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:30:26" (1/1) ... [2021-11-07 08:30:26,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8f2595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:26, skipping insertion in model container [2021-11-07 08:30:26,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:30:26" (1/1) ... [2021-11-07 08:30:26,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:30:26,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:30:27,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:30:27,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:30:27,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:30:27,069 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:30:27,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27 WrapperNode [2021-11-07 08:30:27,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:30:27,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:30:27,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:30:27,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:30:27,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:30:27,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:30:27,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:30:27,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:30:27,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:30:27,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:30:27,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:30:27,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:30:27,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (1/1) ... [2021-11-07 08:30:27,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:27,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:27,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 08:30:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:30:27,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:30:27,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:30:27,442 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-07 08:30:27,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:27 BoogieIcfgContainer [2021-11-07 08:30:27,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:30:27,451 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 08:30:27,452 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 08:30:27,456 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 08:30:27,457 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:27,458 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 08:30:26" (1/3) ... [2021-11-07 08:30:27,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a4fd473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:30:27, skipping insertion in model container [2021-11-07 08:30:27,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:27,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:30:27" (2/3) ... [2021-11-07 08:30:27,462 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a4fd473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 08:30:27, skipping insertion in model container [2021-11-07 08:30:27,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 08:30:27,462 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:27" (3/3) ... [2021-11-07 08:30:27,465 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-11-07 08:30:27,542 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 08:30:27,542 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 08:30:27,543 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 08:30:27,543 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 08:30:27,544 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 08:30:27,544 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 08:30:27,544 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 08:30:27,544 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 08:30:27,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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) [2021-11-07 08:30:27,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-07 08:30:27,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:27,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:27,597 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:30:27,597 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:27,598 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 08:30:27,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 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) [2021-11-07 08:30:27,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-07 08:30:27,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:27,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:27,603 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:30:27,603 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-07 08:30:27,612 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 7#L15-2true [2021-11-07 08:30:27,613 INFO L793 eck$LassoCheckResult]: Loop: 7#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 10#L18-2true assume !(main_~j~0 < main_~a~0); 12#L18-3true main_~i~0 := 1 + main_~i~0; 7#L15-2true [2021-11-07 08:30:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-07 08:30:27,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:27,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897388237] [2021-11-07 08:30:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:27,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:27,736 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:27,769 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2021-11-07 08:30:27,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:27,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589629171] [2021-11-07 08:30:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:27,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:27,810 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:27,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2021-11-07 08:30:27,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:27,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084022282] [2021-11-07 08:30:27,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:27,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:27,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:27,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084022282] [2021-11-07 08:30:27,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084022282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:27,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:27,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:27,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250933738] [2021-11-07 08:30:28,120 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:28,125 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:28,125 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:28,125 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:28,125 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 08:30:28,125 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,126 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:28,126 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:28,126 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-11-07 08:30:28,126 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:28,127 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:28,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,306 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:28,307 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 08:30:28,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:28,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:28,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:28,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:28,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 08:30:28,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:28,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:28,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:28,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:28,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:28,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 08:30:28,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:28,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:28,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 08:30:28,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 08:30:28,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-11-07 08:30:28,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:28,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:28,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 08:30:28,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 08:30:28,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:28,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:28,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:28,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:28,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 08:30:28,542 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 08:30:28,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 08:30:28,873 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 08:30:28,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-07 08:30:28,877 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 08:30:28,877 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 08:30:28,877 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 08:30:28,877 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 08:30:28,877 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 08:30:28,877 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,877 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 08:30:28,878 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 08:30:28,878 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-11-07 08:30:28,878 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 08:30:28,878 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 08:30:28,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 08:30:28,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 08:30:28,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 08:30:28,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:28,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:28,972 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 [2021-11-07 08:30:28,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:28,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:28,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:28,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:28,988 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:28,988 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:28,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 08:30:29,009 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:29,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-07 08:30:29,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:29,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:29,049 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 [2021-11-07 08:30:29,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 08:30:29,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:29,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:29,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:29,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:29,072 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 08:30:29,072 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 08:30:29,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 08:30:29,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:29,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:29,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:29,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:29,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 08:30:29,149 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 [2021-11-07 08:30:29,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 08:30:29,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 08:30:29,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 08:30:29,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 08:30:29,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 08:30:29,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 08:30:29,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 08:30:29,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 08:30:29,214 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 08:30:29,215 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 08:30:29,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 08:30:29,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:30:29,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 08:30:29,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 08:30:29,242 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 08:30:29,242 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 08:30:29,242 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-11-07 08:30:29,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 08:30:29,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:29,273 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 08:30:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:29,309 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:30:29,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:29,321 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:30:29,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:30:29,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:30:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:29,516 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-07 08:30:29,518 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-11-07 08:30:29,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) 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) Result 60 states and 102 transitions. Complement of second has 9 states. [2021-11-07 08:30:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-07 08:30:29,650 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) [2021-11-07 08:30:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2021-11-07 08:30:29,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2021-11-07 08:30:29,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:29,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-07 08:30:29,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:29,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2021-11-07 08:30:29,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 08:30:29,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2021-11-07 08:30:29,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-07 08:30:29,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2021-11-07 08:30:29,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-11-07 08:30:29,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-11-07 08:30:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2021-11-07 08:30:29,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 08:30:29,681 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-11-07 08:30:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2021-11-07 08:30:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-11-07 08:30:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-11-07 08:30:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-11-07 08:30:29,717 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-11-07 08:30:29,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:30:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:30:29,724 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second 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) [2021-11-07 08:30:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:29,775 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-11-07 08:30:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:30:29,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-11-07 08:30:29,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-07 08:30:29,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2021-11-07 08:30:29,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-11-07 08:30:29,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-11-07 08:30:29,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-11-07 08:30:29,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:30:29,790 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-11-07 08:30:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-11-07 08:30:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2021-11-07 08:30:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-07 08:30:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-11-07 08:30:29,794 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 08:30:29,795 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-07 08:30:29,795 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 08:30:29,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-11-07 08:30:29,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-07 08:30:29,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:29,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:29,796 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:30:29,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-07 08:30:29,797 INFO L791 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 183#L15-2 [2021-11-07 08:30:29,797 INFO L793 eck$LassoCheckResult]: Loop: 183#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 188#L18-3 main_~i~0 := 1 + main_~i~0; 183#L15-2 [2021-11-07 08:30:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-11-07 08:30:29,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:29,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809367419] [2021-11-07 08:30:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:29,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:29,806 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2021-11-07 08:30:29,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:29,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376269997] [2021-11-07 08:30:29,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:29,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:29,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376269997] [2021-11-07 08:30:29,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376269997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:29,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:29,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:30:29,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010586961] [2021-11-07 08:30:29,844 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:30:29,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:30:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:30:29,845 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) 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) [2021-11-07 08:30:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:29,896 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-11-07 08:30:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:30:29,897 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2021-11-07 08:30:29,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-11-07 08:30:29,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2021-11-07 08:30:29,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-11-07 08:30:29,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-07 08:30:29,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-11-07 08:30:29,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:30:29,899 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-11-07 08:30:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-11-07 08:30:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-11-07 08:30:29,905 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) [2021-11-07 08:30:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-07 08:30:29,906 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-07 08:30:29,906 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-07 08:30:29,906 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 08:30:29,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-07 08:30:29,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-11-07 08:30:29,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:29,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:29,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:30:29,909 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:30:29,909 INFO L791 eck$LassoCheckResult]: Stem: 219#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 220#L15-2 [2021-11-07 08:30:29,909 INFO L793 eck$LassoCheckResult]: Loop: 220#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 221#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 222#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 223#L23-2 assume !(main_~l~0 < main_~b~0); 224#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 225#L20-3 main_~j~0 := 1 + main_~j~0; 226#L18-2 assume !(main_~j~0 < main_~a~0); 227#L18-3 main_~i~0 := 1 + main_~i~0; 220#L15-2 [2021-11-07 08:30:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-11-07 08:30:29,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:29,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549284599] [2021-11-07 08:30:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:29,923 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:29,931 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2021-11-07 08:30:29,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:29,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132692261] [2021-11-07 08:30:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:29,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:29,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:29,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132692261] [2021-11-07 08:30:29,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132692261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:29,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:29,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:30:29,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934561525] [2021-11-07 08:30:29,990 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:30:29,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:30:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:30:29,991 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:30:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:30,029 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-11-07 08:30:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:30:30,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-11-07 08:30:30,031 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-11-07 08:30:30,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2021-11-07 08:30:30,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-11-07 08:30:30,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-07 08:30:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-11-07 08:30:30,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:30:30,032 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-07 08:30:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-11-07 08:30:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-07 08:30:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 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) [2021-11-07 08:30:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-11-07 08:30:30,034 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-07 08:30:30,034 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-07 08:30:30,034 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 08:30:30,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-11-07 08:30:30,035 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-11-07 08:30:30,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:30,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:30,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-07 08:30:30,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:30:30,036 INFO L791 eck$LassoCheckResult]: Stem: 254#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 255#L15-2 [2021-11-07 08:30:30,036 INFO L793 eck$LassoCheckResult]: Loop: 255#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 256#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 257#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 258#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 252#L25-2 assume !(main_~m~0 >= 0); 253#L25-3 main_~l~0 := 1 + main_~l~0; 262#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 259#L20-3 main_~j~0 := 1 + main_~j~0; 260#L18-2 assume !(main_~j~0 < main_~a~0); 261#L18-3 main_~i~0 := 1 + main_~i~0; 255#L15-2 [2021-11-07 08:30:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-11-07 08:30:30,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:30,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261920998] [2021-11-07 08:30:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:30,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2021-11-07 08:30:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:30,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857354045] [2021-11-07 08:30:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:30,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:30:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:30:30,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:30:30,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857354045] [2021-11-07 08:30:30,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857354045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:30:30,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:30:30,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:30:30,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715866216] [2021-11-07 08:30:30,094 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-07 08:30:30,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:30:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:30:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:30:30,096 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-11-07 08:30:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:30:30,128 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-11-07 08:30:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:30:30,129 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2021-11-07 08:30:30,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 08:30:30,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2021-11-07 08:30:30,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-07 08:30:30,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-07 08:30:30,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2021-11-07 08:30:30,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:30:30,130 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-07 08:30:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2021-11-07 08:30:30,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-11-07 08:30:30,131 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) [2021-11-07 08:30:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-11-07 08:30:30,132 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-07 08:30:30,132 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-07 08:30:30,132 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-07 08:30:30,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-11-07 08:30:30,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-07 08:30:30,133 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 08:30:30,133 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 08:30:30,133 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-07 08:30:30,133 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-07 08:30:30,134 INFO L791 eck$LassoCheckResult]: Stem: 284#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 285#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 286#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 287#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 288#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 283#L25-2 [2021-11-07 08:30:30,134 INFO L793 eck$LassoCheckResult]: Loop: 283#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 283#L25-2 [2021-11-07 08:30:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2021-11-07 08:30:30,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:30,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762323731] [2021-11-07 08:30:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:30,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,144 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,152 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2021-11-07 08:30:30,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:30,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081857773] [2021-11-07 08:30:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:30,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,158 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,172 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:30:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2021-11-07 08:30:30,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:30:30,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717522517] [2021-11-07 08:30:30,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:30:30,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:30:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,182 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:30:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:30:30,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:30:30,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 08:30:30 BoogieIcfgContainer [2021-11-07 08:30:30,331 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 08:30:30,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:30:30,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:30:30,332 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:30:30,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:30:27" (3/4) ... [2021-11-07 08:30:30,336 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-07 08:30:30,379 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:30:30,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:30:30,381 INFO L168 Benchmark]: Toolchain (without parser) took 3550.65 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 92.5 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,381 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:30,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.51 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 131.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 130.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:30:30,383 INFO L168 Benchmark]: Boogie Preprocessor took 23.43 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 129.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,384 INFO L168 Benchmark]: RCFGBuilder took 308.95 ms. Allocated memory is still 157.3 MB. Free memory was 129.4 MB in the beginning and 121.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,385 INFO L168 Benchmark]: BuchiAutomizer took 2880.18 ms. Allocated memory is still 157.3 MB. Free memory was 121.0 MB in the beginning and 94.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,386 INFO L168 Benchmark]: Witness Printer took 47.30 ms. Allocated memory is still 157.3 MB. Free memory was 94.5 MB in the beginning and 92.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:30:30,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.51 ms. Allocated memory is still 157.3 MB. Free memory was 121.3 MB in the beginning and 131.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.43 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 130.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.43 ms. Allocated memory is still 157.3 MB. Free memory was 130.6 MB in the beginning and 129.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 308.95 ms. Allocated memory is still 157.3 MB. Free memory was 129.4 MB in the beginning and 121.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2880.18 ms. Allocated memory is still 157.3 MB. Free memory was 121.0 MB in the beginning and 94.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 47.30 ms. Allocated memory is still 157.3 MB. Free memory was 94.5 MB in the beginning and 92.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 94 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {a=2, \result=0, b=7, m=1003, l=0, i=0, k=3, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-07 08:30:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b11c063b-810a-4b9d-890e-e353e9c633f4/bin/uautomizer-AkOaLMaTGY/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)