./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer --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 32bit --witnessprinter.graph.data.programhash f543785985cc26d3ae0e2e08051519180509acad ............................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 09:58:13,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:58:13,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:58:13,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:58:13,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:58:13,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:58:13,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:58:13,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:58:13,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:58:13,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:58:13,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:58:13,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:58:13,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:58:13,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:58:13,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:58:13,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:58:13,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:58:13,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:58:13,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:58:13,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:58:13,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:58:13,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:58:13,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:58:13,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:58:13,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:58:13,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:58:13,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:58:13,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:58:13,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:58:13,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:58:13,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:58:13,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:58:13,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:58:13,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:58:13,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:58:13,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:58:13,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:58:13,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:58:13,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:58:13,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:58:13,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:58:13,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 09:58:13,486 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:58:13,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:58:13,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:58:13,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:58:13,488 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 09:58:13,488 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 09:58:13,488 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 09:58:13,488 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 09:58:13,489 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 09:58:13,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 09:58:13,489 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 09:58:13,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:58:13,489 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:58:13,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 09:58:13,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:58:13,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:58:13,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:58:13,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 09:58:13,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 09:58:13,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 09:58:13,491 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:58:13,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:58:13,492 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 09:58:13,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:58:13,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 09:58:13,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:58:13,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 09:58:13,493 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 09:58:13,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:58:13,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 09:58:13,493 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 09:58:13,494 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 09:58:13,494 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f543785985cc26d3ae0e2e08051519180509acad [2019-11-20 09:58:13,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:58:13,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:58:13,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:58:13,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:58:13,651 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:58:13,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2019-11-20 09:58:13,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/data/fce466117/005817a62ee2415b880220f790f015f0/FLAG95dd01d11 [2019-11-20 09:58:14,091 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:58:14,092 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2019-11-20 09:58:14,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/data/fce466117/005817a62ee2415b880220f790f015f0/FLAG95dd01d11 [2019-11-20 09:58:14,110 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/data/fce466117/005817a62ee2415b880220f790f015f0 [2019-11-20 09:58:14,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:58:14,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:58:14,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:14,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:58:14,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:58:14,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dad0900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14, skipping insertion in model container [2019-11-20 09:58:14,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,128 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:58:14,143 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:58:14,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:14,300 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:58:14,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:58:14,399 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:58:14,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14 WrapperNode [2019-11-20 09:58:14,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:58:14,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:14,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:58:14,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:58:14,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:58:14,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:58:14,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:58:14,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:58:14,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... [2019-11-20 09:58:14,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:58:14,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:58:14,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:58:14,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:58:14,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 09:58:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:58:14,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:58:14,682 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:58:14,682 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 09:58:14,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:14 BoogieIcfgContainer [2019-11-20 09:58:14,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:58:14,684 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 09:58:14,684 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 09:58:14,688 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 09:58:14,688 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:14,689 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:58:14" (1/3) ... [2019-11-20 09:58:14,690 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28bca09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:58:14, skipping insertion in model container [2019-11-20 09:58:14,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:14,691 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:58:14" (2/3) ... [2019-11-20 09:58:14,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28bca09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:58:14, skipping insertion in model container [2019-11-20 09:58:14,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 09:58:14,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:14" (3/3) ... [2019-11-20 09:58:14,693 INFO L371 chiAutomizerObserver]: Analyzing ICFG phases_2-2.c [2019-11-20 09:58:14,749 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 09:58:14,749 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 09:58:14,750 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 09:58:14,750 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 09:58:14,750 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 09:58:14,750 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 09:58:14,750 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 09:58:14,750 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 09:58:14,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 09:58:14,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 09:58:14,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:58:14,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:58:14,785 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 09:58:14,786 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:58:14,786 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 09:58:14,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 09:58:14,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 09:58:14,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 09:58:14,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 09:58:14,788 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 09:58:14,788 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 09:58:14,795 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L16true assume !!(main_~y~0 % 4294967296 > 0); 7#L19-2true [2019-11-20 09:58:14,796 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L19true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 7#L19-2true [2019-11-20 09:58:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:14,807 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-20 09:58:14,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:14,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976350326] [2019-11-20 09:58:14,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:14,901 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:58:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1444, now seen corresponding path program 1 times [2019-11-20 09:58:14,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:14,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359309293] [2019-11-20 09:58:14,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:14,908 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 09:58:14,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650162757] [2019-11-20 09:58:14,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:58:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-20 09:58:14,973 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-20 09:58:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:58:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash 959561, now seen corresponding path program 1 times [2019-11-20 09:58:14,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 09:58:14,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064053077] [2019-11-20 09:58:14,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 09:58:14,980 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 09:58:14,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208315292] [2019-11-20 09:58:14,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-20 09:58:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 09:58:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:58:15,034 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 09:58:15,188 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 09:58:15,351 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-20 09:58:15,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:58:15 BoogieIcfgContainer [2019-11-20 09:58:15,395 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 09:58:15,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:58:15,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:58:15,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:58:15,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:58:14" (3/4) ... [2019-11-20 09:58:15,398 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-20 09:58:15,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eaedd90a-40a6-4f77-b1d4-df8b6b4e8faa/bin/uautomizer/witness.graphml [2019-11-20 09:58:15,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:58:15,431 INFO L168 Benchmark]: Toolchain (without parser) took 1317.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -154.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,431 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:15,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -211.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,433 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:58:15,433 INFO L168 Benchmark]: Boogie Preprocessor took 24.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,434 INFO L168 Benchmark]: RCFGBuilder took 226.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,434 INFO L168 Benchmark]: BuchiAutomizer took 710.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,435 INFO L168 Benchmark]: Witness Printer took 34.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:58:15,439 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -211.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 710.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: 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 {\result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73c62f60=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@e47a3d6=0, x=1, y=2} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] unsigned int x = 1; [L14] unsigned int y = __VERIFIER_nondet_uint(); [L16] COND FALSE !(!(y > 0)) Loop: [L18] COND TRUE x < y [L19] COND TRUE x < y / x [L20] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...