./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/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_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/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 0.1.24-cad4683 [2019-11-16 00:23:43,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:23:43,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:23:43,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:23:43,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:23:43,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:23:43,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:23:43,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:23:43,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:23:43,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:23:43,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:23:43,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:23:43,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:23:43,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:23:43,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:23:43,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:23:43,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:23:43,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:23:43,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:23:43,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:23:43,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:23:43,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:23:43,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:23:43,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:23:43,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:23:43,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:23:43,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:23:43,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:23:43,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:23:43,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:23:43,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:23:43,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:23:43,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:23:43,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:23:43,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:23:43,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:23:43,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:23:43,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:23:43,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:23:43,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:23:43,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:23:43,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-16 00:23:43,161 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:23:43,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:23:43,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:23:43,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:23:43,163 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:23:43,163 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-16 00:23:43,164 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-16 00:23:43,164 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-16 00:23:43,164 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-16 00:23:43,164 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-16 00:23:43,165 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-16 00:23:43,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:23:43,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-16 00:23:43,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:23:43,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:23:43,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-16 00:23:43,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-16 00:23:43,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-16 00:23:43,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:23:43,167 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-16 00:23:43,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:23:43,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-16 00:23:43,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:23:43,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:23:43,168 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-16 00:23:43,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:23:43,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:23:43,169 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-16 00:23:43,182 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-16 00:23:43,182 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_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/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 [2019-11-16 00:23:43,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:23:43,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:23:43,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:23:43,240 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:23:43,240 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:23:43,241 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i [2019-11-16 00:23:43,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/data/66e0c1325/1717cdbb297f4973bedfb95c33639bcb/FLAG8dddde45a [2019-11-16 00:23:43,786 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:23:43,786 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrlen-alloca-2.i [2019-11-16 00:23:43,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/data/66e0c1325/1717cdbb297f4973bedfb95c33639bcb/FLAG8dddde45a [2019-11-16 00:23:44,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/data/66e0c1325/1717cdbb297f4973bedfb95c33639bcb [2019-11-16 00:23:44,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:23:44,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:23:44,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:23:44,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:23:44,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:23:44,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2377906b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44, skipping insertion in model container [2019-11-16 00:23:44,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,114 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:23:44,153 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:23:44,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:23:44,566 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:23:44,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:23:44,663 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:23:44,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44 WrapperNode [2019-11-16 00:23:44,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:23:44,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:23:44,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:23:44,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:23:44,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:23:44,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:23:44,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:23:44,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:23:44,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... [2019-11-16 00:23:44,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:23:44,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:23:44,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:23:44,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:23:44,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3cad0d33-feb1-47fa-b2cd-9cd26d7272c9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:23:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-16 00:23:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:23:44,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:23:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:23:44,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:23:44,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:23:45,117 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:23:45,117 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-16 00:23:45,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:45 BoogieIcfgContainer [2019-11-16 00:23:45,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:23:45,120 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-16 00:23:45,120 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-16 00:23:45,123 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-16 00:23:45,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:23:45,124 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:23:44" (1/3) ... [2019-11-16 00:23:45,125 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@634a759b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:23:45, skipping insertion in model container [2019-11-16 00:23:45,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:23:45,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:44" (2/3) ... [2019-11-16 00:23:45,126 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@634a759b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:23:45, skipping insertion in model container [2019-11-16 00:23:45,126 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-16 00:23:45,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:45" (3/3) ... [2019-11-16 00:23:45,128 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrlen-alloca-2.i [2019-11-16 00:23:45,177 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-16 00:23:45,177 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-16 00:23:45,178 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-16 00:23:45,178 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:23:45,178 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:23:45,178 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-16 00:23:45,178 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:23:45,178 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-16 00:23:45,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-16 00:23:45,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-16 00:23:45,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:23:45,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:23:45,223 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-16 00:23:45,223 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:23:45,224 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-16 00:23:45,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-16 00:23:45,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-16 00:23:45,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-16 00:23:45,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-16 00:23:45,226 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-16 00:23:45,226 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-16 00:23:45,235 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet4, main_#t~malloc5.base, main_#t~malloc5.offset, main_#t~ret6, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet4;havoc main_#t~nondet4; 8#L557true assume !(main_~length1~0 < 1); 13#L557-2true call main_#t~malloc5.base, main_#t~malloc5.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc5.base, main_#t~malloc5.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~str.base, cstrlen_#in~str.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~pre2.base, cstrlen_#t~pre2.offset, cstrlen_#t~mem3, cstrlen_~str.base, cstrlen_~str.offset, cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~str.base, cstrlen_~str.offset := cstrlen_#in~str.base, cstrlen_#in~str.offset;havoc cstrlen_~s~0.base, cstrlen_~s~0.offset;cstrlen_~s~0.base, cstrlen_~s~0.offset := cstrlen_~str.base, cstrlen_~str.offset; 7#L551-4true [2019-11-16 00:23:45,235 INFO L793 eck$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 [2019-11-16 00:23:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:23:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-11-16 00:23:45,250 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:23:45,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955957600] [2019-11-16 00:23:45,251 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,251 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:23:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,408 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:23:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:23:45,410 INFO L82 PathProgramCache]: Analyzing trace with hash 42862, now seen corresponding path program 1 times [2019-11-16 00:23:45,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:23:45,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76279989] [2019-11-16 00:23:45,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:23:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,428 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:23:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:23:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1806814474, now seen corresponding path program 1 times [2019-11-16 00:23:45,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:23:45,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260562605] [2019-11-16 00:23:45,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,431 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:23:45,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:23:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:23:45,481 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:23:45,822 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-11-16 00:23:45,920 INFO L210 LassoAnalysis]: Preferences: [2019-11-16 00:23:45,921 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-16 00:23:45,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-16 00:23:45,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-16 00:23:45,923 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-16 00:23:45,923 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-16 00:23:45,923 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-16 00:23:45,924 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-16 00:23:45,925 INFO L131 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrlen-alloca-2.i_Iteration1_Lasso [2019-11-16 00:23:45,925 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-16 00:23:45,926 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-16 00:23:45,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:45,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,198 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2019-11-16 00:23:46,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-16 00:23:46,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-16 00:23:46,758 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-16 00:23:46,761 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 [2019-11-16 00:23:46,762 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,763 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:23:46,763 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,764 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,764 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,766 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:23:46,766 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:23:46,772 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,773 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 [2019-11-16 00:23:46,780 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,781 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:23:46,781 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,781 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,781 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,782 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:23:46,782 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:23:46,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,791 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 [2019-11-16 00:23:46,792 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,793 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:23:46,793 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,795 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,795 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,796 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:23:46,798 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:23:46,800 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,800 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 [2019-11-16 00:23:46,802 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,802 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,802 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,802 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,805 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:23:46,805 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:23:46,813 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,830 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 [2019-11-16 00:23:46,831 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,831 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,831 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,831 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,833 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:23:46,834 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:23:46,837 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,838 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 [2019-11-16 00:23:46,839 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,839 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-16 00:23:46,839 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,840 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,840 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,840 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-16 00:23:46,841 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-16 00:23:46,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,842 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 [2019-11-16 00:23:46,843 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,843 INFO L202 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-16 00:23:46,844 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,844 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,851 INFO L400 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-16 00:23:46,865 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:23:46,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-16 00:23:46,929 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 [2019-11-16 00:23:46,930 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-16 00:23:46,931 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-16 00:23:46,931 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-16 00:23:46,931 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-16 00:23:46,946 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-16 00:23:46,953 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-16 00:23:47,071 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-16 00:23:47,136 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-16 00:23:47,138 INFO L444 ModelExtractionUtils]: 21 out of 28 variables were initially zero. Simplification set additionally 4 variables to zero. [2019-11-16 00:23:47,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-16 00:23:47,142 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-16 00:23:47,143 INFO L510 LassoAnalysis]: Proved termination. [2019-11-16 00:23:47,144 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~s~0.offset, v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_1) = -1*ULTIMATE.start_cstrlen_~s~0.offset + 1*v_rep(select #length ULTIMATE.start_cstrlen_~s~0.base)_1 Supporting invariants [] [2019-11-16 00:23:47,162 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-16 00:23:47,173 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-16 00:23:47,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:23:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:23:47,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-16 00:23:47,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:23:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:23:47,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:23:47,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:23:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:23:47,279 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 [2019-11-16 00:23:47,281 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2019-11-16 00:23:47,340 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. [2019-11-16 00:23:47,343 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 [2019-11-16 00:23:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-16 00:23:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2019-11-16 00:23:47,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-16 00:23:47,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:23:47,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-16 00:23:47,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:23:47,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 6 letters. [2019-11-16 00:23:47,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-16 00:23:47,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-11-16 00:23:47,357 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:23:47,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2019-11-16 00:23:47,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-16 00:23:47,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-16 00:23:47,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-16 00:23:47,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-16 00:23:47,365 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:23:47,365 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:23:47,365 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:23:47,365 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-16 00:23:47,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:23:47,366 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-16 00:23:47,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-16 00:23:47,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:23:47 BoogieIcfgContainer [2019-11-16 00:23:47,374 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-16 00:23:47,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:23:47,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:23:47,375 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:23:47,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:45" (3/4) ... [2019-11-16 00:23:47,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-16 00:23:47,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:23:47,381 INFO L168 Benchmark]: Toolchain (without parser) took 3284.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 944.7 MB in the beginning and 957.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 166.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:23:47,382 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:23:47,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -218.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:23:47,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:23:47,384 INFO L168 Benchmark]: Boogie Preprocessor took 30.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:23:47,385 INFO L168 Benchmark]: RCFGBuilder took 375.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:23:47,385 INFO L168 Benchmark]: BuchiAutomizer took 2254.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 957.0 MB in the end (delta: 177.6 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:23:47,386 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 1.2 GB. Free memory is still 957.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:23:47,389 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 566.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -218.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 375.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2254.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 957.0 MB in the end (delta: 177.6 MB). Peak memory consumption was 177.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.92 ms. Allocated memory is still 1.2 GB. Free memory is still 957.0 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 -1 * s + unknown-#length-unknown[s] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: inital114 mio100 ax115 hnf99 lsp81 ukn91 mio100 lsp45 div100 bol100 ite100 ukn100 eq193 hnf88 smp100 dnf109 smp100 tf100 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 82ms VariablesStem: 6 VariablesLoop: 4 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 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...