./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/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 0.1.24-6b5699a [2019-11-25 08:52:36,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:36,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:36,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:36,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:36,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:36,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:36,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:36,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:36,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:36,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:36,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:36,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:36,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:36,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:36,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:36,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:36,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:36,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:36,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:36,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:36,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:36,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:36,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:36,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:36,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:36,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:36,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:36,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:36,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:36,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:36,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:36,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:36,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:36,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:36,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:36,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:36,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:36,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:36,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:36,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:36,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:52:36,322 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:36,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:36,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:36,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:36,334 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:36,335 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:52:36,335 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:52:36,335 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:52:36,335 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:52:36,335 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:52:36,336 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:52:36,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:36,336 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:52:36,336 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:36,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:36,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:52:36,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:36,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:52:36,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:52:36,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:52:36,339 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:52:36,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:36,339 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:52:36,339 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:36,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:52:36,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:36,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:36,340 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:52:36,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:36,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:36,341 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:52:36,342 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:52:36,342 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_83770ab3-a85c-4a95-92d5-255203a93c90/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 [2019-11-25 08:52:36,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:36,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:36,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:36,534 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:36,535 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:36,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-2.c [2019-11-25 08:52:36,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/data/f6f7bfefa/f794359b9e034f29b3a7095afc4f3062/FLAG4f310fff2 [2019-11-25 08:52:36,963 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:36,964 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/sv-benchmarks/c/loop-acceleration/phases_2-2.c [2019-11-25 08:52:36,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/data/f6f7bfefa/f794359b9e034f29b3a7095afc4f3062/FLAG4f310fff2 [2019-11-25 08:52:36,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/data/f6f7bfefa/f794359b9e034f29b3a7095afc4f3062 [2019-11-25 08:52:36,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:36,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:36,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:36,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:36,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:36,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a54c27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:36, skipping insertion in model container [2019-11-25 08:52:36,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:36" (1/1) ... [2019-11-25 08:52:36,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:37,012 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:37,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:37,157 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:37,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:37,255 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:37,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37 WrapperNode [2019-11-25 08:52:37,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:37,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:37,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:37,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:37,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:37,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:37,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:37,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:37,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... [2019-11-25 08:52:37,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:37,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:37,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:37,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:37,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/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 [2019-11-25 08:52:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:37,508 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:37,508 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:52:37,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:37 BoogieIcfgContainer [2019-11-25 08:52:37,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:37,510 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:52:37,510 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:52:37,513 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:52:37,514 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:37,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:52:36" (1/3) ... [2019-11-25 08:52:37,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f99123f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:37, skipping insertion in model container [2019-11-25 08:52:37,515 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:37,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:37" (2/3) ... [2019-11-25 08:52:37,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f99123f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:37, skipping insertion in model container [2019-11-25 08:52:37,516 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:37,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:37" (3/3) ... [2019-11-25 08:52:37,518 INFO L371 chiAutomizerObserver]: Analyzing ICFG phases_2-2.c [2019-11-25 08:52:37,561 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:52:37,561 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:52:37,561 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:52:37,561 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:37,563 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:37,563 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:52:37,563 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:37,563 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:52:37,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:52:37,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:37,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:37,602 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:52:37,602 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:37,602 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:52:37,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-25 08:52:37,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:52:37,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:37,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:37,604 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:52:37,605 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:52:37,612 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~post2, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L16true assume !!(main_~y~0 % 4294967296 > 0); 7#L19-2true [2019-11-25 08:52:37,612 INFO L796 eck$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 [2019-11-25 08:52:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-25 08:52:37,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406791502] [2019-11-25 08:52:37,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,725 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1444, now seen corresponding path program 1 times [2019-11-25 08:52:37,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114537439] [2019-11-25 08:52:37,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,732 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:52:37,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842004012] [2019-11-25 08:52:37,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/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 [2019-11-25 08:52:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2019-11-25 08:52:37,818 WARN L168 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2019-11-25 08:52:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:37,819 INFO L82 PathProgramCache]: Analyzing trace with hash 959561, now seen corresponding path program 1 times [2019-11-25 08:52:37,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:37,820 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670275929] [2019-11-25 08:52:37,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:37,825 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:52:37,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088325056] [2019-11-25 08:52:37,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:37,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:38,048 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-25 08:52:38,218 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-25 08:52:38,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:52:38 BoogieIcfgContainer [2019-11-25 08:52:38,274 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:52:38,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:52:38,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:52:38,275 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:52:38,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:37" (3/4) ... [2019-11-25 08:52:38,277 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:52:38,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_83770ab3-a85c-4a95-92d5-255203a93c90/bin/uautomizer/witness.graphml [2019-11-25 08:52:38,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:52:38,309 INFO L168 Benchmark]: Toolchain (without parser) took 1325.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -142.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:38,310 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:38,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -195.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:38,311 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:38,311 INFO L168 Benchmark]: Boogie Preprocessor took 14.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:38,312 INFO L168 Benchmark]: RCFGBuilder took 209.84 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:38,312 INFO L168 Benchmark]: BuchiAutomizer took 764.51 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:52:38,312 INFO L168 Benchmark]: Witness Printer took 33.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:52:38,316 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -195.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 209.84 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 764.51 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * Witness Printer took 33.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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@3b40961f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6d71c92d=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...