./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array19_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/array19_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ea3ac03f270ffde8f9fa6679f30ddad451a463f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2019-11-28 20:35:56,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:35:56,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:35:56,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:35:56,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:35:56,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:35:56,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:35:56,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:35:56,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:35:56,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:35:56,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:35:56,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:35:56,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:35:56,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:35:56,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:35:56,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:35:56,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:35:56,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:35:56,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:35:56,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:35:56,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:35:56,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:35:56,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:35:56,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:35:56,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:35:56,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:35:56,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:35:56,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:35:56,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:35:56,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:35:56,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:35:56,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:35:56,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:35:56,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:35:56,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:35:56,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:35:56,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:35:56,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:35:56,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:35:56,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:35:56,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:35:56,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 20:35:56,144 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:35:56,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:35:56,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:35:56,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:35:56,147 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:35:56,147 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 20:35:56,147 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 20:35:56,148 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 20:35:56,148 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 20:35:56,148 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 20:35:56,148 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 20:35:56,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:35:56,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:35:56,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:35:56,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:35:56,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 20:35:56,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 20:35:56,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 20:35:56,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:35:56,151 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 20:35:56,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:35:56,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 20:35:56,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:35:56,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:35:56,152 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 20:35:56,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:35:56,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:35:56,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:35:56,153 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 20:35:56,155 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 20:35:56,155 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea3ac03f270ffde8f9fa6679f30ddad451a463f [2019-11-28 20:35:56,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:35:56,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:35:56,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:35:56,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:35:56,498 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:35:56,499 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array19_alloca.i [2019-11-28 20:35:56,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e25a27c/7260d0bd7997434f96787c8c06c02602/FLAGe7ba277d1 [2019-11-28 20:35:57,180 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:35:57,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array19_alloca.i [2019-11-28 20:35:57,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e25a27c/7260d0bd7997434f96787c8c06c02602/FLAGe7ba277d1 [2019-11-28 20:35:57,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e25a27c/7260d0bd7997434f96787c8c06c02602 [2019-11-28 20:35:57,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:35:57,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:35:57,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:35:57,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:35:57,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:35:57,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:35:57" (1/1) ... [2019-11-28 20:35:57,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7ce7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:57, skipping insertion in model container [2019-11-28 20:35:57,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:35:57" (1/1) ... [2019-11-28 20:35:57,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:35:57,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:35:58,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:35:58,035 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:35:58,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:35:58,182 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:35:58,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58 WrapperNode [2019-11-28 20:35:58,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:35:58,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:35:58,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:35:58,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:35:58,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:35:58,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:35:58,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:35:58,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:35:58,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... [2019-11-28 20:35:58,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:35:58,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:35:58,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:35:58,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:35:58,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 20:35:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:35:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:35:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 20:35:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:35:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:35:58,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:35:58,580 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:35:58,581 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 20:35:58,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:58 BoogieIcfgContainer [2019-11-28 20:35:58,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:35:58,583 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 20:35:58,584 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 20:35:58,587 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 20:35:58,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:35:58,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 08:35:57" (1/3) ... [2019-11-28 20:35:58,590 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42fbcb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:35:58, skipping insertion in model container [2019-11-28 20:35:58,590 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:35:58,590 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:35:58" (2/3) ... [2019-11-28 20:35:58,591 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42fbcb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 08:35:58, skipping insertion in model container [2019-11-28 20:35:58,591 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 20:35:58,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:58" (3/3) ... [2019-11-28 20:35:58,596 INFO L371 chiAutomizerObserver]: Analyzing ICFG array19_alloca.i [2019-11-28 20:35:58,667 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 20:35:58,667 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 20:35:58,667 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 20:35:58,668 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:35:58,668 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:35:58,668 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 20:35:58,669 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:35:58,669 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 20:35:58,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-28 20:35:58,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-11-28 20:35:58,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:35:58,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:35:58,718 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 20:35:58,718 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:35:58,718 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 20:35:58,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2019-11-28 20:35:58,720 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-11-28 20:35:58,720 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:35:58,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:35:58,721 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 20:35:58,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 20:35:58,730 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 14#L367true assume !(main_~length~0 < 1); 5#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 11#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 15#L370-3true [2019-11-28 20:35:58,731 INFO L796 eck$LassoCheckResult]: Loop: 15#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 13#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 15#L370-3true [2019-11-28 20:35:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:35:58,738 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-11-28 20:35:58,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:35:58,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656261011] [2019-11-28 20:35:58,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:35:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,874 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:35:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:35:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2019-11-28 20:35:58,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:35:58,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751669052] [2019-11-28 20:35:58,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:35:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:35:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:35:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2019-11-28 20:35:58,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:35:58,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252762523] [2019-11-28 20:35:58,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:35:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:35:58,949 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:35:59,136 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-11-28 20:35:59,197 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 20:35:59,198 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 20:35:59,198 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 20:35:59,198 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 20:35:59,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 20:35:59,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 20:35:59,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 20:35:59,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: array19_alloca.i_Iteration1_Lasso [2019-11-28 20:35:59,199 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 20:35:59,199 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 20:35:59,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 20:35:59,632 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 20:35:59,637 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:35:59,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:35:59,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:35:59,647 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:35:59,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:35:59,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:35:59,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:35:59,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:35:59,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,656 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:35:59,668 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:35:59,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:35:59,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:35:59,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:35:59,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:35:59,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:35:59,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:35:59,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,675 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:35:59,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:35:59,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:35:59,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:35:59,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:35:59,702 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:35:59,704 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:35:59,711 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:35:59,731 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-28 20:35:59,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:35:59,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 20:35:59,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:35:59,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:35:59,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:35:59,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 20:35:59,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,739 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 20:35:59,752 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 20:35:59,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 20:35:59,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 20:35:59,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 20:35:59,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 20:35:59,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 20:35:59,796 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 20:35:59,842 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2019-11-28 20:35:59,842 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 20:35:59,852 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 20:35:59,856 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 20:35:59,856 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 20:35:59,857 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-11-28 20:35:59,868 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-28 20:35:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:35:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:35:59,939 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 20:35:59,942 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:35:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:35:59,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:35:59,961 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:35:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:35:59,995 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-28 20:35:59,996 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 3 states. [2019-11-28 20:36:00,053 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 3 states. Result 30 states and 40 transitions. Complement of second has 7 states. [2019-11-28 20:36:00,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-28 20:36:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 20:36:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-11-28 20:36:00,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-28 20:36:00,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:00,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-28 20:36:00,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:00,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-28 20:36:00,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 20:36:00,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. [2019-11-28 20:36:00,067 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:36:00,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 13 transitions. [2019-11-28 20:36:00,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 20:36:00,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 20:36:00,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-28 20:36:00,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:36:00,075 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:36:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-28 20:36:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-28 20:36:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:36:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-28 20:36:00,108 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:36:00,109 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-28 20:36:00,109 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 20:36:00,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-28 20:36:00,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:36:00,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:36:00,110 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:36:00,111 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:36:00,111 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:36:00,112 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 104#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 105#L367 assume !(main_~length~0 < 1); 108#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 109#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 110#L370-3 assume !(main_~i~0 < main_~length~0); 106#L370-4 main_~j~0 := 0; 103#L374-2 [2019-11-28 20:36:00,112 INFO L796 eck$LassoCheckResult]: Loop: 103#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + (1 + main_#t~mem209);havoc main_#t~mem209; 103#L374-2 [2019-11-28 20:36:00,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2019-11-28 20:36:00,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:00,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784092855] [2019-11-28 20:36:00,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:36:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:36:00,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784092855] [2019-11-28 20:36:00,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:36:00,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:36:00,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222103832] [2019-11-28 20:36:00,188 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 20:36:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2019-11-28 20:36:00,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:00,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450646198] [2019-11-28 20:36:00,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:00,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:36:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:36:00,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:36:00,272 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 20:36:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:36:00,311 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-28 20:36:00,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:36:00,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-28 20:36:00,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:36:00,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2019-11-28 20:36:00,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-28 20:36:00,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-28 20:36:00,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2019-11-28 20:36:00,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 20:36:00,316 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 20:36:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2019-11-28 20:36:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-28 20:36:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 20:36:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-28 20:36:00,318 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 20:36:00,319 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 20:36:00,319 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 20:36:00,319 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-28 20:36:00,320 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-28 20:36:00,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 20:36:00,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 20:36:00,322 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:36:00,322 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-28 20:36:00,322 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 133#L367 assume !(main_~length~0 < 1); 136#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 137#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 138#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 139#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 140#L370-3 assume !(main_~i~0 < main_~length~0); 134#L370-4 main_~j~0 := 0; 131#L374-2 [2019-11-28 20:36:00,323 INFO L796 eck$LassoCheckResult]: Loop: 131#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + (1 + main_#t~mem209);havoc main_#t~mem209; 131#L374-2 [2019-11-28 20:36:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2019-11-28 20:36:00,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:00,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807762071] [2019-11-28 20:36:00,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,356 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2019-11-28 20:36:00,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:00,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216845279] [2019-11-28 20:36:00,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:36:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2019-11-28 20:36:00,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:36:00,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568195296] [2019-11-28 20:36:00,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:36:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:36:00,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:36:00,667 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-11-28 20:36:00,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 08:36:00 BoogieIcfgContainer [2019-11-28 20:36:00,761 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 20:36:00,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:36:00,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:36:00,762 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:36:00,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:35:58" (3/4) ... [2019-11-28 20:36:00,767 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 20:36:00,814 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:36:00,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:36:00,817 INFO L168 Benchmark]: Toolchain (without parser) took 3319.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.3 MB in the beginning and 894.0 MB in the end (delta: 62.4 MB). Peak memory consumption was 206.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,818 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:36:00,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.98 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. [2019-11-28 20:36:00,820 INFO L168 Benchmark]: Boogie Preprocessor took 40.97 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,821 INFO L168 Benchmark]: RCFGBuilder took 294.22 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,821 INFO L168 Benchmark]: BuchiAutomizer took 2178.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.6 MB in the end (delta: 200.9 MB). Peak memory consumption was 200.9 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,822 INFO L168 Benchmark]: Witness Printer took 52.48 ms. Allocated memory is still 1.2 GB. Free memory was 900.6 MB in the beginning and 894.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:36:00,831 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 684.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.98 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 40.97 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 294.22 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: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2178.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 900.6 MB in the end (delta: 200.9 MB). Peak memory consumption was 200.9 MB. Max. memory is 11.5 GB. * Witness Printer took 52.48 ms. Allocated memory is still 1.2 GB. Free memory was 900.6 MB in the beginning and 894.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 24 SDslu, 10 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital100 mio100 ax100 hnf99 lsp93 ukn80 mio100 lsp63 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: 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: 374]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@222ffb9f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4250964f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@597a9151=0, length=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@128f17c7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@597a9151=2, j=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3d01b589=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 374]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i