./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/n.c11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/n.c11.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/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 f82cf7726c8201fc884c9fdb36548fce0440ab7f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 18:06:07,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:06:07,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:06:07,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:06:07,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:06:07,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:06:07,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:06:07,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:06:07,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:06:07,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:06:07,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:06:07,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:06:07,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:06:07,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:06:07,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:06:07,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:06:07,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:06:07,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:06:07,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:06:07,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:06:07,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:06:07,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:06:07,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:06:07,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:06:07,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:06:07,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:06:07,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:06:07,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:06:07,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:06:07,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:06:07,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:06:07,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:06:07,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:06:07,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:06:07,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:06:07,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:06:07,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:06:07,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:06:07,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:06:07,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:06:07,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:06:07,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:06:07,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:06:07,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:06:07,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:06:07,374 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:06:07,374 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:06:07,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:06:07,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:06:07,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:06:07,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:06:07,377 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:06:07,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:06:07,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:06:07,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:06:07,377 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:06:07,378 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:06:07,378 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_74588b92-2550-46c5-b235-579706c74ca9/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 -> f82cf7726c8201fc884c9fdb36548fce0440ab7f [2019-12-07 18:06:07,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:06:07,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:06:07,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:06:07,489 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:06:07,490 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:06:07,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/../../sv-benchmarks/c/loops/n.c11.c [2019-12-07 18:06:07,528 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/data/f3f640307/75aba675b06f4b508a160e5244c39b3d/FLAGec9522c03 [2019-12-07 18:06:07,929 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:06:07,930 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/sv-benchmarks/c/loops/n.c11.c [2019-12-07 18:06:07,933 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/data/f3f640307/75aba675b06f4b508a160e5244c39b3d/FLAGec9522c03 [2019-12-07 18:06:07,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/data/f3f640307/75aba675b06f4b508a160e5244c39b3d [2019-12-07 18:06:07,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:06:07,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:06:07,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:06:07,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:06:07,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:06:07,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:06:07" (1/1) ... [2019-12-07 18:06:07,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791e404e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:07, skipping insertion in model container [2019-12-07 18:06:07,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:06:07" (1/1) ... [2019-12-07 18:06:07,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:06:07,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:06:08,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:06:08,100 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:06:08,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:06:08,119 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:06:08,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08 WrapperNode [2019-12-07 18:06:08,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:06:08,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:06:08,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:06:08,120 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:06:08,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:06:08,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:06:08,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:06:08,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:06:08,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... [2019-12-07 18:06:08,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:06:08,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:06:08,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:06:08,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:06:08,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/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 [2019-12-07 18:06:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:06:08,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:06:08,286 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:06:08,287 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 18:06:08,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:06:08 BoogieIcfgContainer [2019-12-07 18:06:08,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:06:08,288 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:06:08,288 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:06:08,290 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:06:08,291 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:06:08,291 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:06:07" (1/3) ... [2019-12-07 18:06:08,291 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8c09aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:06:08, skipping insertion in model container [2019-12-07 18:06:08,291 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:06:08,291 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:06:08" (2/3) ... [2019-12-07 18:06:08,292 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b8c09aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:06:08, skipping insertion in model container [2019-12-07 18:06:08,292 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:06:08,292 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:06:08" (3/3) ... [2019-12-07 18:06:08,293 INFO L371 chiAutomizerObserver]: Analyzing ICFG n.c11.c [2019-12-07 18:06:08,322 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:06:08,322 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:06:08,322 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:06:08,322 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:06:08,322 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:06:08,322 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:06:08,322 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:06:08,322 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:06:08,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 18:06:08,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:06:08,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:08,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:08,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:06:08,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:06:08,348 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:06:08,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-12-07 18:06:08,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:06:08,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:08,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:08,349 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:06:08,349 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:06:08,354 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post1, main_#t~nondet0, main_~a~0, main_~len~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;havoc main_~i~0; 7#L19-2true [2019-12-07 18:06:08,354 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 3#L21true assume 4 == main_~len~0 % 4294967296;main_~len~0 := 0; 11#L21-2true assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 7#L19-2true [2019-12-07 18:06:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,359 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 18:06:08,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981458297] [2019-12-07 18:06:08,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,426 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,427 INFO L82 PathProgramCache]: Analyzing trace with hash 39821, now seen corresponding path program 1 times [2019-12-07 18:06:08,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994309966] [2019-12-07 18:06:08,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,457 INFO L82 PathProgramCache]: Analyzing trace with hash 963342, now seen corresponding path program 1 times [2019-12-07 18:06:08,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609226329] [2019-12-07 18:06:08,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:08,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609226329] [2019-12-07 18:06:08,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:06:08,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:06:08,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466760105] [2019-12-07 18:06:08,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:06:08,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:06:08,575 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 18:06:08,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:08,590 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-12-07 18:06:08,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:06:08,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 22 transitions. [2019-12-07 18:06:08,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:06:08,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 7 states and 8 transitions. [2019-12-07 18:06:08,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 18:06:08,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 18:06:08,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-12-07 18:06:08,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:06:08,597 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 18:06:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-12-07 18:06:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-12-07 18:06:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:06:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-12-07 18:06:08,614 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 18:06:08,614 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-12-07 18:06:08,614 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:06:08,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-12-07 18:06:08,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 18:06:08,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:08,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:08,615 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:06:08,615 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:06:08,615 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~nondet0, main_~a~0, main_~len~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;havoc main_~i~0; 46#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 43#L21 assume !(4 == main_~len~0 % 4294967296); 44#L21-2 [2019-12-07 18:06:08,615 INFO L796 eck$LassoCheckResult]: Loop: 44#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 47#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 48#L21 assume 4 == main_~len~0 % 4294967296;main_~len~0 := 0; 44#L21-2 [2019-12-07 18:06:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-12-07 18:06:08,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211373016] [2019-12-07 18:06:08,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,621 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 46451, now seen corresponding path program 2 times [2019-12-07 18:06:08,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690821498] [2019-12-07 18:06:08,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash 925831567, now seen corresponding path program 1 times [2019-12-07 18:06:08,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051650923] [2019-12-07 18:06:08,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:08,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051650923] [2019-12-07 18:06:08,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779650865] [2019-12-07 18:06:08,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/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 [2019-12-07 18:06:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:08,699 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:06:08,701 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:06:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:08,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:06:08,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2019-12-07 18:06:08,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843812566] [2019-12-07 18:06:08,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:08,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:06:08,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:06:08,793 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-12-07 18:06:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:08,809 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-12-07 18:06:08,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:06:08,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2019-12-07 18:06:08,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-12-07 18:06:08,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 18:06:08,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 18:06:08,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 18:06:08,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2019-12-07 18:06:08,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:06:08,811 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 18:06:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2019-12-07 18:06:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-12-07 18:06:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 18:06:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-12-07 18:06:08,812 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 18:06:08,812 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-12-07 18:06:08,812 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:06:08,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2019-12-07 18:06:08,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-12-07 18:06:08,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:08,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:08,813 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:06:08,813 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2019-12-07 18:06:08,813 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~nondet0, main_~a~0, main_~len~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;havoc main_~i~0; 87#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 92#L21 assume !(4 == main_~len~0 % 4294967296); 89#L21-2 [2019-12-07 18:06:08,813 INFO L796 eck$LassoCheckResult]: Loop: 89#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 88#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 84#L21 assume !(4 == main_~len~0 % 4294967296); 85#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 91#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 90#L21 assume 4 == main_~len~0 % 4294967296;main_~len~0 := 0; 89#L21-2 [2019-12-07 18:06:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,814 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 2 times [2019-12-07 18:06:08,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255207563] [2019-12-07 18:06:08,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1383897983, now seen corresponding path program 1 times [2019-12-07 18:06:08,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973122870] [2019-12-07 18:06:08,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:08,847 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -831686173, now seen corresponding path program 2 times [2019-12-07 18:06:08,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:08,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962130369] [2019-12-07 18:06:08,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:08,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962130369] [2019-12-07 18:06:08,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370588848] [2019-12-07 18:06:08,906 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/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 [2019-12-07 18:06:08,929 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:06:08,929 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:06:08,930 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:06:08,931 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:06:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:08,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:06:08,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-12-07 18:06:08,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460696055] [2019-12-07 18:06:09,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:06:09,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:06:09,116 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-12-07 18:06:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:09,136 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 18:06:09,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:06:09,137 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2019-12-07 18:06:09,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 18:06:09,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2019-12-07 18:06:09,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 18:06:09,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-12-07 18:06:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-12-07 18:06:09,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:06:09,138 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-12-07 18:06:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-12-07 18:06:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 18:06:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:06:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 18:06:09,139 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 18:06:09,139 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 18:06:09,140 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:06:09,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-12-07 18:06:09,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-12-07 18:06:09,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:09,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:09,140 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:06:09,140 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2019-12-07 18:06:09,141 INFO L794 eck$LassoCheckResult]: Stem: 143#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~nondet0, main_~a~0, main_~len~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;havoc main_~i~0; 144#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 152#L21 assume !(4 == main_~len~0 % 4294967296); 147#L21-2 [2019-12-07 18:06:09,141 INFO L796 eck$LassoCheckResult]: Loop: 147#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 145#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 146#L21 assume !(4 == main_~len~0 % 4294967296); 150#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 151#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 141#L21 assume !(4 == main_~len~0 % 4294967296); 142#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 149#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 148#L21 assume 4 == main_~len~0 % 4294967296;main_~len~0 := 0; 147#L21-2 [2019-12-07 18:06:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-12-07 18:06:09,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:09,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265325007] [2019-12-07 18:06:09,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:09,146 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 313813491, now seen corresponding path program 2 times [2019-12-07 18:06:09,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:09,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593021296] [2019-12-07 18:06:09,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:09,171 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:09,172 INFO L82 PathProgramCache]: Analyzing trace with hash 903627023, now seen corresponding path program 3 times [2019-12-07 18:06:09,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:09,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582301302] [2019-12-07 18:06:09,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:06:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:09,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582301302] [2019-12-07 18:06:09,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753558342] [2019-12-07 18:06:09,227 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:06:09,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 18:06:09,256 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:06:09,257 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:06:09,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:06:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:06:09,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:06:09,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-07 18:06:09,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991998771] [2019-12-07 18:06:09,950 WARN L192 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2019-12-07 18:06:11,036 WARN L192 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2019-12-07 18:06:11,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:06:11,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:06:11,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:06:11,037 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 7 states. [2019-12-07 18:06:11,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:06:11,073 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-12-07 18:06:11,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:06:11,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 17 transitions. [2019-12-07 18:06:11,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2019-12-07 18:06:11,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 17 transitions. [2019-12-07 18:06:11,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 18:06:11,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 18:06:11,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 17 transitions. [2019-12-07 18:06:11,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:06:11,075 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-12-07 18:06:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 17 transitions. [2019-12-07 18:06:11,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 18:06:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:06:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-12-07 18:06:11,077 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-12-07 18:06:11,078 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-12-07 18:06:11,078 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:06:11,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2019-12-07 18:06:11,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 18:06:11,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:06:11,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:06:11,079 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 18:06:11,079 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2019-12-07 18:06:11,079 INFO L794 eck$LassoCheckResult]: Stem: 216#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~nondet0, main_~a~0, main_~len~0, main_~i~0;havoc main_~a~0;main_~len~0 := 0;havoc main_~i~0; 217#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 214#L21 assume !(4 == main_~len~0 % 4294967296); 215#L21-2 [2019-12-07 18:06:11,079 INFO L796 eck$LassoCheckResult]: Loop: 215#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 218#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 228#L21 assume !(4 == main_~len~0 % 4294967296); 227#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 226#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 225#L21 assume !(4 == main_~len~0 % 4294967296); 224#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 223#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 222#L21 assume !(4 == main_~len~0 % 4294967296); 220#L21-2 assume 0 <= (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) && (if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) < 5;main_~a~0 := main_~a~0[(if main_~len~0 % 4294967296 % 4294967296 <= 2147483647 then main_~len~0 % 4294967296 % 4294967296 else main_~len~0 % 4294967296 % 4294967296 - 4294967296) := 0];main_#t~post1 := main_~len~0;main_~len~0 := 1 + main_#t~post1;havoc main_#t~post1; 221#L19-2 assume !!(0 != main_#t~nondet0 % 256);havoc main_#t~nondet0; 219#L21 assume 4 == main_~len~0 % 4294967296;main_~len~0 := 0; 215#L21-2 [2019-12-07 18:06:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:11,080 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 4 times [2019-12-07 18:06:11,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:11,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72895962] [2019-12-07 18:06:11,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,085 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:11,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1326016769, now seen corresponding path program 3 times [2019-12-07 18:06:11,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:11,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323157813] [2019-12-07 18:06:11,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:06:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash -902292893, now seen corresponding path program 4 times [2019-12-07 18:06:11,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:06:11,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395480078] [2019-12-07 18:06:11,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:06:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:06:11,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:06:12,689 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2019-12-07 18:06:14,149 WARN L192 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 103 DAG size of output: 32 [2019-12-07 18:06:14,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:06:14 BoogieIcfgContainer [2019-12-07 18:06:14,177 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:06:14,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:06:14,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:06:14,177 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:06:14,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:06:08" (3/4) ... [2019-12-07 18:06:14,180 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 18:06:14,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_74588b92-2550-46c5-b235-579706c74ca9/bin/uautomizer/witness.graphml [2019-12-07 18:06:14,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:06:14,224 INFO L168 Benchmark]: Toolchain (without parser) took 6279.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 943.5 MB in the beginning and 865.3 MB in the end (delta: 78.3 MB). Peak memory consumption was 180.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:14,225 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:14,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:14,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:14,226 INFO L168 Benchmark]: Boogie Preprocessor took 12.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:14,226 INFO L168 Benchmark]: RCFGBuilder took 136.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:14,227 INFO L168 Benchmark]: BuchiAutomizer took 5888.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.3 MB in the end (delta: 215.4 MB). Peak memory consumption was 215.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:06:14,227 INFO L168 Benchmark]: Witness Printer took 45.96 ms. Allocated memory is still 1.1 GB. Free memory is still 865.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:06:14,229 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.43 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 136.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5888.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 865.3 MB in the end (delta: 215.4 MB). Peak memory consumption was 215.4 MB. Max. memory is 11.5 GB. * Witness Printer took 45.96 ms. Allocated memory is still 1.1 GB. Free memory is still 865.3 MB. 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 Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 5 iterations. TraceHistogramMax:4. Analysis of lassos took 5.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 18 SDslu, 30 SDs, 0 SdLazy, 84 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc4 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: 19]: 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 {len=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50c3e7e6=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@650d039e=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a[5]; [L14] unsigned int len=0; [L16] int i; [L19] COND TRUE __VERIFIER_nondet_bool() [L21] COND FALSE !(len==4) Loop: [L24] EXPR a[len] [L24] a[len]=0 [L26] len++ [L19] COND TRUE __VERIFIER_nondet_bool() [L21] COND FALSE !(len==4) [L24] EXPR a[len] [L24] a[len]=0 [L26] len++ [L19] COND TRUE __VERIFIER_nondet_bool() [L21] COND FALSE !(len==4) [L24] EXPR a[len] [L24] a[len]=0 [L26] len++ [L19] COND TRUE __VERIFIER_nondet_bool() [L21] COND FALSE !(len==4) [L24] EXPR a[len] [L24] a[len]=0 [L26] len++ [L19] COND TRUE __VERIFIER_nondet_bool() [L21] COND TRUE len==4 [L22] len =0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...