./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/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 64bit --witnessprinter.graph.data.programhash 5ff7b92c82017cd5879c0ee0425fe0901429b3c6 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:58:32,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:58:32,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:58:32,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:58:32,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:58:32,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:58:32,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:58:32,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:58:32,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:58:32,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:58:32,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:58:32,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:58:32,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:58:32,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:58:32,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:58:32,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:58:32,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:58:32,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:58:32,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:58:32,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:58:32,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:58:32,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:58:32,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:58:32,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:58:32,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:58:32,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:58:32,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:58:32,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:58:32,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:58:32,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:58:32,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:58:32,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:58:32,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:58:32,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:58:32,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:58:32,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:58:32,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:58:32,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:58:32,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:58:32,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:58:32,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:58:32,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 15:58:32,614 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:58:32,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:58:32,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:58:32,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:58:32,615 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:58:32,616 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:58:32,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:58:32,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:58:32,617 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:58:32,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:58:32,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:58:32,618 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:58:32,619 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:58:32,619 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_c2607070-b14c-4a28-a0b6-419407e50f0d/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ff7b92c82017cd5879c0ee0425fe0901429b3c6 [2019-12-07 15:58:32,717 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:58:32,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:58:32,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:58:32,728 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:58:32,728 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:58:32,728 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i [2019-12-07 15:58:32,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/data/f390aed43/780e837453bd44c697af8a50a5cddfbd/FLAG052587cb7 [2019-12-07 15:58:33,217 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:58:33,217 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i [2019-12-07 15:58:33,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/data/f390aed43/780e837453bd44c697af8a50a5cddfbd/FLAG052587cb7 [2019-12-07 15:58:33,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/data/f390aed43/780e837453bd44c697af8a50a5cddfbd [2019-12-07 15:58:33,240 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:58:33,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:58:33,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:58:33,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:58:33,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:58:33,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed577ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33, skipping insertion in model container [2019-12-07 15:58:33,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:58:33,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:58:33,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:58:33,474 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:58:33,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:58:33,531 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:58:33,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33 WrapperNode [2019-12-07 15:58:33,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:58:33,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:58:33,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:58:33,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:58:33,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:58:33,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:58:33,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:58:33,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:58:33,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... [2019-12-07 15:58:33,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:58:33,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:58:33,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:58:33,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:58:33,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/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 15:58:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:58:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:58:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:58:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:58:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:58:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:58:33,740 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:58:33,740 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 15:58:33,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:58:33 BoogieIcfgContainer [2019-12-07 15:58:33,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:58:33,741 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:58:33,741 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:58:33,743 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:58:33,744 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:58:33,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:58:33" (1/3) ... [2019-12-07 15:58:33,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@494ad8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:58:33, skipping insertion in model container [2019-12-07 15:58:33,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:58:33,745 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:58:33" (2/3) ... [2019-12-07 15:58:33,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@494ad8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:58:33, skipping insertion in model container [2019-12-07 15:58:33,745 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:58:33,745 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:58:33" (3/3) ... [2019-12-07 15:58:33,746 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca-2.i [2019-12-07 15:58:33,775 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:58:33,775 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:58:33,776 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:58:33,776 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:58:33,776 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:58:33,776 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:58:33,776 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:58:33,776 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:58:33,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-12-07 15:58:33,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:58:33,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:58:33,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:58:33,802 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 15:58:33,802 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:58:33,802 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:58:33,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-12-07 15:58:33,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 15:58:33,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:58:33,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:58:33,804 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 15:58:33,804 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 15:58:33,808 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~ret6, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 8#L557true assume !(main_~length1~0 < 1); 13#L557-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 7#L551-4true [2019-12-07 15:58:33,809 INFO L796 eck$LassoCheckResult]: Loop: 7#L551-4true call cstrlen_#t~mem3 := read~int(cstrlen_~s~0.base, cstrlen_~s~0.offset, 1); 12#L551-1true assume !!(0 != cstrlen_#t~mem3);havoc cstrlen_#t~mem3; 4#L551-3true cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~s~0.base, 1 + cstrlen_~s~0.offset;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset; 7#L551-4true [2019-12-07 15:58:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:33,812 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-12-07 15:58:33,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:58:33,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553096619] [2019-12-07 15:58:33,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,906 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:58:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:33,907 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 1 times [2019-12-07 15:58:33,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:58:33,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470405760] [2019-12-07 15:58:33,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,918 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:58:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1806814474, now seen corresponding path program 1 times [2019-12-07 15:58:33,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:58:33,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662164579] [2019-12-07 15:58:33,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:58:33,949 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:58:34,096 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-12-07 15:58:34,145 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:58:34,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:58:34,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:58:34,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:58:34,146 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:58:34,146 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,146 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:58:34,146 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:58:34,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-2.i_Iteration1_Lasso [2019-12-07 15:58:34,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:58:34,146 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:58:34,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 15:58:34,511 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:58:34,514 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,518 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 [2019-12-07 15:58:34,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:58:34,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:58:34,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:58:34,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,528 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 [2019-12-07 15:58:34,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:58:34,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:58:34,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:58:34,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/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 [2019-12-07 15:58:34,535 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 [2019-12-07 15:58:34,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:58:34,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:58:34,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:58:34,539 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,543 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 [2019-12-07 15:58:34,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,546 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:58:34,547 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:58:34,551 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,555 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 [2019-12-07 15:58:34,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,559 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:58:34,559 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:58:34,562 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/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 [2019-12-07 15:58:34,568 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 [2019-12-07 15:58:34,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:58:34,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:58:34,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:58:34,572 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,575 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 [2019-12-07 15:58:34,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,583 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:58:34,583 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:58:34,590 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,594 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 [2019-12-07 15:58:34,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:58:34,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:58:34,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:58:34,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:58:34,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:58:34,602 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:58:34,612 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:58:34,642 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2019-12-07 15:58:34,642 INFO L444 ModelExtractionUtils]: 6 out of 28 variables were initially zero. Simplification set additionally 19 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2607070-b14c-4a28-a0b6-419407e50f0d/bin/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:58:34,649 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:58:34,657 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:58:34,657 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:58:34,658 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_1, ULTIMATE.start_cstrlen_~s~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_1 - 1*ULTIMATE.start_cstrlen_~s~0.offset Supporting invariants [] [2019-12-07 15:58:34,671 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 15:58:34,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:58:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:34,709 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:58:34,710 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:58:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:34,719 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:58:34,720 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:58:34,730 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 15:58:34,741 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 [2019-12-07 15:58:34,742 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2019-12-07 15:58:34,773 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 25 states and 28 transitions. Complement of second has 5 states. [2019-12-07 15:58:34,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:58:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:58:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-12-07 15:58:34,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2019-12-07 15:58:34,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:58:34,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2019-12-07 15:58:34,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:58:34,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 15:58:34,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:58:34,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-12-07 15:58:34,780 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:58:34,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2019-12-07 15:58:34,783 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:58:34,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:58:34,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:58:34,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:58:34,784 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:58:34,784 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:58:34,784 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:58:34,784 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:58:34,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:58:34,784 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:58:34,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 15:58:34,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:58:34 BoogieIcfgContainer [2019-12-07 15:58:34,788 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:58:34,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:58:34,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:58:34,789 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:58:34,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:58:33" (3/4) ... [2019-12-07 15:58:34,792 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:58:34,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:58:34,793 INFO L168 Benchmark]: Toolchain (without parser) took 1551.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 947.8 MB in the beginning and 892.8 MB in the end (delta: 55.0 MB). Peak memory consumption was 189.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:58:34,793 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:58:34,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:58:34,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.00 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. [2019-12-07 15:58:34,795 INFO L168 Benchmark]: Boogie Preprocessor took 16.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:58:34,795 INFO L168 Benchmark]: RCFGBuilder took 165.07 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:58:34,795 INFO L168 Benchmark]: BuchiAutomizer took 1047.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 892.8 MB in the end (delta: 204.0 MB). Peak memory consumption was 204.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:58:34,796 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 892.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:58:34,798 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 289.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.00 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 16.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 165.07 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1047.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 892.8 MB in the end (delta: 204.0 MB). Peak memory consumption was 204.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 892.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[s] + -1 * s and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 10 SDtfs, 17 SDslu, 5 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital113 mio100 ax115 hnf99 lsp81 ukn91 mio100 lsp46 div100 bol100 ite100 ukn100 eq193 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms 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: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...