./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strcspn.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_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strcspn.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 eaca3e09b762fe94634aa0b3e6a04213782212a5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:54:00,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:54:00,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:54:00,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:54:00,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:54:00,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:54:00,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:54:00,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:54:00,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:54:00,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:54:00,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:54:00,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:54:00,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:54:00,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:54:00,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:54:00,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:54:00,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:54:00,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:54:00,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:54:00,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:54:00,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:54:00,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:54:00,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:54:00,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:54:00,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:54:00,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:54:00,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:54:00,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:54:00,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:54:00,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:54:00,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:54:00,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:54:00,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:54:00,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:54:00,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:54:00,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:54:00,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:54:00,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:54:00,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:54:00,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:54:00,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:54:00,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 15:54:00,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:54:00,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:54:00,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:54:00,596 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 15:54:00,596 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 15:54:00,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 15:54:00,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 15:54:00,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:54:00,598 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 15:54:00,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:54:00,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:54:00,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:54:00,599 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 15:54:00,599 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 15:54:00,600 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_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 -> eaca3e09b762fe94634aa0b3e6a04213782212a5 [2019-12-07 15:54:00,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:54:00,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:54:00,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:54:00,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:54:00,713 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:54:00,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strcspn.i [2019-12-07 15:54:00,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/data/f4b4014ff/254a43c504fb4f2e9bec4d2a91dabae6/FLAGea6656f8d [2019-12-07 15:54:01,193 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:54:01,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/sv-benchmarks/c/termination-libowfat/strcspn.i [2019-12-07 15:54:01,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/data/f4b4014ff/254a43c504fb4f2e9bec4d2a91dabae6/FLAGea6656f8d [2019-12-07 15:54:01,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/data/f4b4014ff/254a43c504fb4f2e9bec4d2a91dabae6 [2019-12-07 15:54:01,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:54:01,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:54:01,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:01,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:54:01,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:54:01,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245daf96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01, skipping insertion in model container [2019-12-07 15:54:01,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:54:01,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:54:01,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:01,469 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:54:01,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:01,531 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:54:01,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01 WrapperNode [2019-12-07 15:54:01,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:01,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:01,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:54:01,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:54:01,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:01,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:54:01,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:54:01,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:54:01,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... [2019-12-07 15:54:01,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:54:01,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:54:01,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:54:01,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:54:01,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:54:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:54:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:54:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:54:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:54:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:54:01,773 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:54:01,773 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 15:54:01,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:01 BoogieIcfgContainer [2019-12-07 15:54:01,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:54:01,775 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 15:54:01,775 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 15:54:01,777 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 15:54:01,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:54:01,778 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 03:54:01" (1/3) ... [2019-12-07 15:54:01,779 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c1f2c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:54:01, skipping insertion in model container [2019-12-07 15:54:01,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:54:01,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:01" (2/3) ... [2019-12-07 15:54:01,779 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c1f2c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 03:54:01, skipping insertion in model container [2019-12-07 15:54:01,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 15:54:01,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:01" (3/3) ... [2019-12-07 15:54:01,780 INFO L371 chiAutomizerObserver]: Analyzing ICFG strcspn.i [2019-12-07 15:54:01,808 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 15:54:01,808 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 15:54:01,808 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 15:54:01,808 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:54:01,808 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:54:01,809 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 15:54:01,809 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:54:01,809 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 15:54:01,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 15:54:01,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:54:01,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:01,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:01,836 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 15:54:01,836 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-12-07 15:54:01,836 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 15:54:01,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 15:54:01,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:54:01,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:01,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:01,838 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 15:54:01,838 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-12-07 15:54:01,843 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2019-12-07 15:54:01,843 INFO L796 eck$LassoCheckResult]: Loop: 18#L510-4true call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 11#L510-1true assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 15#L511-4true assume !true; 19#L511-5true strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 16#L510-3true strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 18#L510-4true [2019-12-07 15:54:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:01,847 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2019-12-07 15:54:01,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:01,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486674123] [2019-12-07 15:54:01,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:01,953 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2019-12-07 15:54:01,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:01,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919161814] [2019-12-07 15:54:01,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:01,974 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 15:54:01,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919161814] [2019-12-07 15:54:01,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:01,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:54:01,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981205867] [2019-12-07 15:54:01,978 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 15:54:01,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:54:01,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:54:01,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:54:01,990 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-12-07 15:54:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:01,995 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-12-07 15:54:01,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:54:01,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-12-07 15:54:01,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:54:01,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2019-12-07 15:54:02,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-12-07 15:54:02,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 15:54:02,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-12-07 15:54:02,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:54:02,001 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 15:54:02,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-12-07 15:54:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 15:54:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:54:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 15:54:02,019 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 15:54:02,019 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 15:54:02,019 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 15:54:02,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-12-07 15:54:02,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 15:54:02,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:02,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:02,020 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 15:54:02,020 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:54:02,020 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 42#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 43#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 50#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 53#L510-4 [2019-12-07 15:54:02,020 INFO L796 eck$LassoCheckResult]: Loop: 53#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 48#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 49#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 44#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 45#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 52#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 53#L510-4 [2019-12-07 15:54:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2019-12-07 15:54:02,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:02,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410505311] [2019-12-07 15:54:02,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,046 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:02,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2019-12-07 15:54:02,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:02,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656997042] [2019-12-07 15:54:02,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,059 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:02,059 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2019-12-07 15:54:02,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:02,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549134407] [2019-12-07 15:54:02,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:02,104 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:02,369 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2019-12-07 15:54:02,458 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:54:02,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:54:02,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:54:02,458 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:54:02,459 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:54:02,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:02,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:54:02,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:54:02,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration2_Lasso [2019-12-07 15:54:02,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:54:02,459 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:54:02,477 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 15:54:02,482 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 15:54:02,486 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 15:54:02,487 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 15:54:02,489 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 15:54:02,723 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2019-12-07 15:54:02,801 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 15:54:02,803 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 15:54:02,804 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 15:54:02,806 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 15:54:02,807 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 15:54:02,811 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 15:54:02,812 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 15:54:02,814 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 15:54:02,815 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 15:54:02,817 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 15:54:02,818 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 15:54:02,819 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 15:54:03,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:54:03,119 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,125 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 15:54:03,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:03,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:03,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:03,131 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,135 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 15:54:03,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:03,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:03,141 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,146 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 15:54:03,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:03,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:03,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:03,149 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,153 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 15:54:03,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:03,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:03,158 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,162 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 15:54:03,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:03,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:03,168 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,177 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 15:54:03,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:03,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:03,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:03,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:03,185 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:03,185 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:03,196 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:54:03,223 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-12-07 15:54:03,223 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:03,227 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:54:03,230 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:54:03,230 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:54:03,230 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~s.offset, v_rep(select #length ULTIMATE.start_strcspn_~s.base)_1) = -1*ULTIMATE.start_strcspn_~s.offset + 1*v_rep(select #length ULTIMATE.start_strcspn_~s.base)_1 Supporting invariants [] [2019-12-07 15:54:03,272 INFO L297 tatePredicateManager]: 15 out of 15 supporting invariants were superfluous and have been removed [2019-12-07 15:54:03,280 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:54:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:03,311 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 15:54:03,312 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:03,321 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 15:54:03,322 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:03,331 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 15:54:03,333 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 15:54:03,333 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-12-07 15:54:03,361 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 20 states and 23 transitions. Complement of second has 4 states. [2019-12-07 15:54:03,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 15:54:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-12-07 15:54:03,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2019-12-07 15:54:03,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:03,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2019-12-07 15:54:03,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:03,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2019-12-07 15:54:03,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:03,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-12-07 15:54:03,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:03,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2019-12-07 15:54:03,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-12-07 15:54:03,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 15:54:03,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2019-12-07 15:54:03,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:54:03,367 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-12-07 15:54:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2019-12-07 15:54:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:54:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:54:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-12-07 15:54:03,368 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-12-07 15:54:03,368 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-12-07 15:54:03,368 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 15:54:03,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2019-12-07 15:54:03,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:03,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:03,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:03,370 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:54:03,370 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:54:03,370 INFO L794 eck$LassoCheckResult]: Stem: 191#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 184#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 185#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 196#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 199#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 192#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 193#L511-4 [2019-12-07 15:54:03,370 INFO L796 eck$LassoCheckResult]: Loop: 193#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 186#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 187#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 197#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 193#L511-4 [2019-12-07 15:54:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:03,370 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2019-12-07 15:54:03,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:03,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411240186] [2019-12-07 15:54:03,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,395 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:03,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2019-12-07 15:54:03,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:03,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384987860] [2019-12-07 15:54:03,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2019-12-07 15:54:03,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:03,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586851969] [2019-12-07 15:54:03,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:03,432 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:03,703 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2019-12-07 15:54:03,789 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:54:03,789 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:54:03,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:54:03,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:54:03,789 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:54:03,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:03,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:54:03,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:54:03,790 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration3_Lasso [2019-12-07 15:54:03,790 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:54:03,790 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:54:03,793 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 15:54:03,794 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 15:54:03,795 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 15:54:03,797 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 15:54:03,798 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 15:54:03,801 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 15:54:03,984 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-12-07 15:54:04,015 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 15:54:04,016 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 15:54:04,017 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 15:54:04,025 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 15:54:04,027 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 15:54:04,028 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 15:54:04,029 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 15:54:04,030 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 15:54:04,031 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 15:54:04,033 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 15:54:04,034 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 15:54:04,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:54:04,293 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:04,295 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 15:54:04,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:04,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:04,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:04,298 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/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 15:54:04,302 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 15:54:04,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:04,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:04,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:04,304 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,309 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 15:54:04,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,311 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:04,311 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:04,314 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,318 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 15:54:04,319 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:04,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:04,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:04,321 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,325 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 15:54:04,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,328 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:04,328 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:04,331 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,338 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 15:54:04,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,339 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-12-07 15:54:04,339 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-12-07 15:54:04,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,353 INFO L401 nArgumentSynthesizer]: We have 56 Motzkin's Theorem applications. [2019-12-07 15:54:04,353 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2019-12-07 15:54:04,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,394 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 15:54:04,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,397 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:04,397 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:04,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,405 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 15:54:04,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,410 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:04,411 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:04,422 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,427 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 15:54:04,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:04,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:04,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:04,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:04,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:04,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:04,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:54:04,465 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2019-12-07 15:54:04,465 INFO L444 ModelExtractionUtils]: 16 out of 28 variables were initially zero. Simplification set additionally 8 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:04,468 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:54:04,470 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 15:54:04,470 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:54:04,470 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_2) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_2 Supporting invariants [1*ULTIMATE.start_strcspn_~reject.offset >= 0] [2019-12-07 15:54:04,506 INFO L297 tatePredicateManager]: 15 out of 17 supporting invariants were superfluous and have been removed [2019-12-07 15:54:04,509 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:54:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:04,536 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 15:54:04,537 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:04,552 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:54:04,552 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:04,564 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 15:54:04,565 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-12-07 15:54:04,565 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-12-07 15:54:04,594 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 45 states and 51 transitions. Complement of second has 6 states. [2019-12-07 15:54:04,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 15:54:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 15:54:04,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 15:54:04,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:04,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-12-07 15:54:04,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:04,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2019-12-07 15:54:04,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:04,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2019-12-07 15:54:04,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:04,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2019-12-07 15:54:04,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 15:54:04,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 15:54:04,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2019-12-07 15:54:04,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:54:04,598 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-12-07 15:54:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2019-12-07 15:54:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-12-07 15:54:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 15:54:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 15:54:04,600 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 15:54:04,600 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 15:54:04,600 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 15:54:04,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-12-07 15:54:04,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:04,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:04,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:04,601 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:54:04,601 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:54:04,601 INFO L794 eck$LassoCheckResult]: Stem: 379#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 373#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 374#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 384#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 387#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 382#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 383#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 396#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 395#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 390#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 391#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 380#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 381#L511-4 [2019-12-07 15:54:04,601 INFO L796 eck$LassoCheckResult]: Loop: 381#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 375#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 376#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 385#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 381#L511-4 [2019-12-07 15:54:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2019-12-07 15:54:04,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484356838] [2019-12-07 15:54:04,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,623 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2019-12-07 15:54:04,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776639336] [2019-12-07 15:54:04,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,630 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2019-12-07 15:54:04,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779725250] [2019-12-07 15:54:04,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:04,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779725250] [2019-12-07 15:54:04,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067459855] [2019-12-07 15:54:04,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:54:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:04,779 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 15:54:04,780 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:04,827 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 15:54:04,828 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 15:54:04,829 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 15:54:04,829 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 15:54:04,829 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2019-12-07 15:54:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:04,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:54:04,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-12-07 15:54:04,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467022217] [2019-12-07 15:54:04,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:54:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 15:54:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:54:04,867 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 13 states. [2019-12-07 15:54:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:04,939 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-12-07 15:54:04,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:54:04,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2019-12-07 15:54:04,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:04,941 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2019-12-07 15:54:04,941 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-12-07 15:54:04,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-12-07 15:54:04,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2019-12-07 15:54:04,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:54:04,941 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2019-12-07 15:54:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2019-12-07 15:54:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-12-07 15:54:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:54:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-12-07 15:54:04,943 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-12-07 15:54:04,943 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-12-07 15:54:04,943 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 15:54:04,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2019-12-07 15:54:04,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:04,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:04,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:04,945 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:54:04,945 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:54:04,945 INFO L794 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 513#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 514#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 524#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 528#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 532#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 529#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 517#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 518#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 526#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 527#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 534#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 533#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 530#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 531#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 520#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 521#L511-4 [2019-12-07 15:54:04,945 INFO L796 eck$LassoCheckResult]: Loop: 521#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 515#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 516#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 525#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 521#L511-4 [2019-12-07 15:54:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2019-12-07 15:54:04,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357950349] [2019-12-07 15:54:04,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,966 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2019-12-07 15:54:04,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190503728] [2019-12-07 15:54:04,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,971 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:04,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:04,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2019-12-07 15:54:04,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:04,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790944049] [2019-12-07 15:54:04,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:04,993 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:05,481 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 138 [2019-12-07 15:54:05,594 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-12-07 15:54:05,595 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:54:05,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:54:05,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:54:05,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:54:05,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:54:05,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:05,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:54:05,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:54:05,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration5_Lasso [2019-12-07 15:54:05,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:54:05,596 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:54:05,598 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 15:54:05,600 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 15:54:05,601 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 15:54:05,602 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 15:54:05,603 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 15:54:05,604 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 15:54:05,606 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 15:54:05,607 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 15:54:05,608 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 15:54:06,028 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-12-07 15:54:06,111 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 15:54:06,112 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 15:54:06,113 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 15:54:06,114 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 15:54:06,115 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 15:54:06,116 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 15:54:06,117 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 15:54:06,119 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 15:54:06,120 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 15:54:06,121 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 15:54:06,614 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-12-07 15:54:06,638 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:54:06,638 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,641 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 15:54:06,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,644 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,646 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,650 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 15:54:06,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:06,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:06,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:06,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,657 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 15:54:06,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,658 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:06,658 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,658 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,659 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:06,659 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:06,660 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,663 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 15:54:06,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:06,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:06,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:06,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,670 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 15:54:06,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:06,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:06,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:06,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,676 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 15:54:06,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,679 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,685 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 15:54:06,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,690 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,695 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 15:54:06,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:06,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:06,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:06,698 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,702 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 15:54:06,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,703 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,704 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,704 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,707 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,711 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 15:54:06,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,713 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,713 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,719 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 15:54:06,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,722 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,722 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,730 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 15:54:06,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,736 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,749 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 15:54:06,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,751 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,753 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,757 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 15:54:06,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,760 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,760 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,764 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,767 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 15:54:06,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:06,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:06,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:06,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:06,774 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:06,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:06,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:54:06,818 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-12-07 15:54:06,818 INFO L444 ModelExtractionUtils]: 21 out of 49 variables were initially zero. Simplification set additionally 25 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:06,825 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:54:06,827 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:54:06,827 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:54:06,827 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3) = -2*ULTIMATE.start_strcspn_~i~0 + 3*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_3 Supporting invariants [] [2019-12-07 15:54:06,920 INFO L297 tatePredicateManager]: 34 out of 35 supporting invariants were superfluous and have been removed [2019-12-07 15:54:06,922 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:54:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:06,951 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 15:54:06,952 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:06,990 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:06,990 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:07,018 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 15:54:07,019 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2019-12-07 15:54:07,019 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-12-07 15:54:07,051 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2019-12-07 15:54:07,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:54:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:54:07,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2019-12-07 15:54:07,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:07,052 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:07,081 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 15:54:07,081 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:07,118 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:07,118 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:07,148 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 15:54:07,149 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2019-12-07 15:54:07,149 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-12-07 15:54:07,179 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2019-12-07 15:54:07,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:54:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:54:07,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2019-12-07 15:54:07,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:07,180 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:07,211 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 15:54:07,212 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:07,249 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:07,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:07,278 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 15:54:07,279 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2019-12-07 15:54:07,279 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2019-12-07 15:54:07,361 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 56 states and 63 transitions. Complement of second has 11 states. [2019-12-07 15:54:07,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2019-12-07 15:54:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:54:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2019-12-07 15:54:07,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2019-12-07 15:54:07,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:07,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2019-12-07 15:54:07,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:07,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2019-12-07 15:54:07,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:07,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2019-12-07 15:54:07,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:07,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2019-12-07 15:54:07,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 15:54:07,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 15:54:07,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2019-12-07 15:54:07,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:54:07,364 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-12-07 15:54:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2019-12-07 15:54:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-12-07 15:54:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 15:54:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-12-07 15:54:07,367 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-12-07 15:54:07,367 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-12-07 15:54:07,367 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 15:54:07,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2019-12-07 15:54:07,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:07,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:07,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:07,368 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2019-12-07 15:54:07,368 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:54:07,368 INFO L794 eck$LassoCheckResult]: Stem: 1050#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1044#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1045#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1055#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1062#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1063#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1074#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1071#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1073#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1072#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1070#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1069#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1068#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1059#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1060#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1064#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1061#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1048#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1049#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1057#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1058#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1075#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1065#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1066#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1067#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1051#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1052#L511-4 [2019-12-07 15:54:07,368 INFO L796 eck$LassoCheckResult]: Loop: 1052#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1046#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1047#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1056#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1052#L511-4 [2019-12-07 15:54:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:07,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2019-12-07 15:54:07,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:07,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964976198] [2019-12-07 15:54:07,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,390 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:07,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2019-12-07 15:54:07,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:07,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022944715] [2019-12-07 15:54:07,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,396 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:07,396 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2019-12-07 15:54:07,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:07,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008691148] [2019-12-07 15:54:07,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:07,417 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:08,036 WARN L192 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 167 [2019-12-07 15:54:08,156 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-07 15:54:08,158 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:54:08,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:54:08,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:54:08,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:54:08,158 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:54:08,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:08,158 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:54:08,158 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:54:08,158 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration6_Lasso [2019-12-07 15:54:08,158 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:54:08,158 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:54:08,160 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 15:54:08,162 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 15:54:08,163 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 15:54:08,164 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 15:54:08,166 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 15:54:08,167 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 15:54:08,169 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 15:54:08,170 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 15:54:08,171 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 15:54:08,172 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 15:54:08,173 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 15:54:08,174 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 15:54:08,176 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 15:54:08,773 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-12-07 15:54:08,877 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 15:54:08,878 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 15:54:08,879 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 15:54:08,880 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 15:54:08,881 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 15:54:09,062 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 15:54:10,097 WARN L192 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2019-12-07 15:54:10,150 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:54:10,150 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,153 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 15:54:10,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,155 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,155 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,157 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,161 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 15:54:10,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,163 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,167 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 15:54:10,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,169 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,173 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 15:54:10,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,175 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,175 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,178 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,181 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 15:54:10,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,184 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,187 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 15:54:10,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,189 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,189 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,195 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 15:54:10,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,198 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,201 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 15:54:10,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,208 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 15:54:10,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,211 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,214 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 15:54:10,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,221 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 15:54:10,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:10,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:10,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:10,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,228 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 15:54:10,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,230 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,230 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,233 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,236 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 15:54:10,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,238 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,244 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 15:54:10,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,247 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,247 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,251 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,254 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 15:54:10,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,257 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,257 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,263 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 15:54:10,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,266 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,266 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,269 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,273 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 15:54:10,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,275 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,275 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,281 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 15:54:10,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:10,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:10,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:10,283 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:10,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:10,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:10,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:54:10,338 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 15:54:10,338 INFO L444 ModelExtractionUtils]: 10 out of 40 variables were initially zero. Simplification set additionally 27 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:10,340 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:54:10,342 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 15:54:10,343 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:54:10,343 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -2*ULTIMATE.start_strcspn_~i~0 + 5*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2019-12-07 15:54:10,442 INFO L297 tatePredicateManager]: 33 out of 34 supporting invariants were superfluous and have been removed [2019-12-07 15:54:10,443 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:54:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,526 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,527 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,560 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 15:54:10,561 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2019-12-07 15:54:10,561 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-12-07 15:54:10,596 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2019-12-07 15:54:10,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:54:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:54:10,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2019-12-07 15:54:10,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:10,597 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,632 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,633 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,686 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,687 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,729 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 15:54:10,729 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 3 loop predicates [2019-12-07 15:54:10,729 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-12-07 15:54:10,772 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2019-12-07 15:54:10,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:54:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-12-07 15:54:10,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2019-12-07 15:54:10,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:10,773 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,808 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,809 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:10,854 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:54:10,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:10,883 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 15:54:10,883 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2019-12-07 15:54:10,883 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2019-12-07 15:54:10,992 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 66 states and 74 transitions. Complement of second has 13 states. [2019-12-07 15:54:10,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2019-12-07 15:54:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 15:54:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2019-12-07 15:54:10,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 4 letters. [2019-12-07 15:54:10,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:10,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 30 letters. Loop has 4 letters. [2019-12-07 15:54:10,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:10,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 8 letters. [2019-12-07 15:54:10,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:10,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 74 transitions. [2019-12-07 15:54:10,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:10,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 52 states and 57 transitions. [2019-12-07 15:54:10,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 15:54:10,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 15:54:10,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 57 transitions. [2019-12-07 15:54:10,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 15:54:10,996 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-12-07 15:54:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 57 transitions. [2019-12-07 15:54:10,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-12-07 15:54:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 15:54:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2019-12-07 15:54:10,999 INFO L711 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-12-07 15:54:10,999 INFO L591 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2019-12-07 15:54:10,999 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 15:54:10,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 52 transitions. [2019-12-07 15:54:10,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 15:54:11,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 15:54:11,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 15:54:11,000 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2019-12-07 15:54:11,000 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 15:54:11,001 INFO L794 eck$LassoCheckResult]: Stem: 1714#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1708#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1709#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1719#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1727#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1730#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1754#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1751#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1753#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1752#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1750#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1749#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1748#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1747#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1731#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1717#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1718#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1740#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1741#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1721#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1722#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1737#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1729#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1725#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1726#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1746#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1723#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1724#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1744#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1743#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1742#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1736#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1735#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1734#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1732#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1715#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1716#L511-4 [2019-12-07 15:54:11,001 INFO L796 eck$LassoCheckResult]: Loop: 1716#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1710#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1711#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem4;havoc strcspn_#t~mem5; 1720#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1716#L511-4 [2019-12-07 15:54:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash -43865248, now seen corresponding path program 6 times [2019-12-07 15:54:11,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:11,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088455794] [2019-12-07 15:54:11,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,030 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:11,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 5 times [2019-12-07 15:54:11,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:11,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263377605] [2019-12-07 15:54:11,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,037 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:11,037 INFO L82 PathProgramCache]: Analyzing trace with hash -345387609, now seen corresponding path program 7 times [2019-12-07 15:54:11,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:54:11,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396600152] [2019-12-07 15:54:11,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:11,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:54:11,958 WARN L192 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 200 [2019-12-07 15:54:12,089 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-12-07 15:54:12,091 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 15:54:12,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 15:54:12,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 15:54:12,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 15:54:12,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 15:54:12,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:12,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 15:54:12,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 15:54:12,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration7_Lasso [2019-12-07 15:54:12,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 15:54:12,092 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 15:54:12,093 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 15:54:12,095 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 15:54:12,097 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 15:54:12,098 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 15:54:12,099 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 15:54:12,100 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 15:54:12,101 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 15:54:12,102 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 15:54:12,103 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 15:54:12,104 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 15:54:12,105 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 15:54:12,479 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2019-12-07 15:54:12,551 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 15:54:12,553 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 15:54:12,554 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 15:54:12,555 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 15:54:12,556 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 15:54:12,557 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 15:54:12,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-12-07 15:54:18,831 WARN L192 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 298 DAG size of output: 150 [2019-12-07 15:54:18,961 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 15:54:18,961 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,963 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 15:54:18,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,964 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:18,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:18,965 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:18,966 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,969 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 15:54:18,970 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,971 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:18,971 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:18,974 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,977 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 15:54:18,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:18,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:18,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:18,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,983 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 15:54:18,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:18,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:18,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:18,986 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,989 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 15:54:18,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:18,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:18,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:18,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:18,995 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 15:54:18,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:18,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:18,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:18,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:18,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:18,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:18,997 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:18,998 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:19,001 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 15:54:19,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:19,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:19,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:19,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:19,003 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:19,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:19,006 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:19,010 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 15:54:19,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:19,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:19,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:19,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:19,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:19,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:19,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:19,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:19,016 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 15:54:19,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:19,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:19,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:19,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:19,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:19,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:19,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:19,018 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:19,021 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 15:54:19,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:19,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 15:54:19,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:19,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:19,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:19,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 15:54:19,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 15:54:19,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:19,028 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 15:54:19,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:19,029 INFO L203 nArgumentSynthesizer]: 108 stem disjuncts [2019-12-07 15:54:19,029 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2019-12-07 15:54:19,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:19,297 INFO L401 nArgumentSynthesizer]: We have 904 Motzkin's Theorem applications. [2019-12-07 15:54:19,298 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2019-12-07 15:54:20,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:20,102 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 15:54:20,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:20,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:20,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:20,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:20,105 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:20,105 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:20,109 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:20,113 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 15:54:20,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 15:54:20,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 15:54:20,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 15:54:20,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 15:54:20,119 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 15:54:20,119 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 15:54:20,135 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 15:54:20,158 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2019-12-07 15:54:20,158 INFO L444 ModelExtractionUtils]: 23 out of 49 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b505c67-3239-4cf6-a98a-3cf4753699ee/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 15:54:20,161 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 15:54:20,163 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 15:54:20,164 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 15:54:20,164 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5, ULTIMATE.start_strcspn_~i~0) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 - 1*ULTIMATE.start_strcspn_~i~0 Supporting invariants [1*ULTIMATE.start_strcspn_~reject.offset >= 0] [2019-12-07 15:54:20,271 INFO L297 tatePredicateManager]: 37 out of 39 supporting invariants were superfluous and have been removed [2019-12-07 15:54:20,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 15:54:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,309 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,311 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,336 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,336 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,350 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 15:54:20,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2019-12-07 15:54:20,350 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-12-07 15:54:20,374 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 6 states. [2019-12-07 15:54:20,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 15:54:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 15:54:20,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2019-12-07 15:54:20,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:20,375 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:20,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,408 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,409 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,435 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,435 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,447 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 15:54:20,447 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2019-12-07 15:54:20,447 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-12-07 15:54:20,470 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 6 states. [2019-12-07 15:54:20,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 15:54:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 15:54:20,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2019-12-07 15:54:20,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:20,471 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 15:54:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,504 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,505 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:20,530 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:54:20,530 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:20,542 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 15:54:20,542 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2019-12-07 15:54:20,542 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-12-07 15:54:20,586 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 108 states and 114 transitions. Complement of second has 8 states. [2019-12-07 15:54:20,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 15:54:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 15:54:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-12-07 15:54:20,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 36 letters. Loop has 4 letters. [2019-12-07 15:54:20,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:20,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 40 letters. Loop has 4 letters. [2019-12-07 15:54:20,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:20,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 36 letters. Loop has 8 letters. [2019-12-07 15:54:20,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 15:54:20,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 114 transitions. [2019-12-07 15:54:20,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:54:20,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 0 states and 0 transitions. [2019-12-07 15:54:20,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 15:54:20,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 15:54:20,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 15:54:20,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 15:54:20,590 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:54:20,591 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:54:20,591 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:54:20,591 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 15:54:20,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:54:20,591 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 15:54:20,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 15:54:20,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 03:54:20 BoogieIcfgContainer [2019-12-07 15:54:20,596 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 15:54:20,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:54:20,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:54:20,596 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:54:20,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:01" (3/4) ... [2019-12-07 15:54:20,599 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:54:20,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:54:20,600 INFO L168 Benchmark]: Toolchain (without parser) took 19386.41 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 383.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -128.3 MB). Peak memory consumption was 255.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,600 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:20,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -146.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:20,600 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,601 INFO L168 Benchmark]: RCFGBuilder took 195.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,601 INFO L168 Benchmark]: BuchiAutomizer took 18820.89 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 282.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.4 MB). Peak memory consumption was 255.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,601 INFO L168 Benchmark]: Witness Printer took 2.90 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:20,603 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -146.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 195.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 18820.89 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 282.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.4 MB). Peak memory consumption was 255.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.90 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - 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 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -1 * s + unknown-#length-unknown[s] and consists of 3 locations. One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 3 * unknown-#length-unknown[reject] and consists of 8 locations. One nondeterministic module has affine ranking function -2 * i + 5 * unknown-#length-unknown[reject] and consists of 9 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (out_len)] + -1 * i and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.7s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 17.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 141 SDtfs, 350 SDslu, 192 SDs, 0 SdLazy, 228 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital264 mio100 ax100 hnf99 lsp95 ukn76 mio100 lsp38 div100 bol100 ite100 ukn100 eq185 hnf87 smp98 dnf1781 smp67 tf100 neg89 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1065ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 108 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 904 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...