./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 9016787135830d25851d4a1126db5f65005e4eb5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 10:47:19,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:47:19,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:47:19,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:47:19,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:47:19,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:47:19,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:47:19,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:47:19,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:47:19,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:47:19,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:47:19,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:47:19,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:47:19,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:47:19,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:47:19,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:47:19,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:47:19,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:47:19,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:47:19,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:47:19,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:47:19,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:47:19,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:47:19,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:47:19,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:47:19,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:47:19,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:47:19,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:47:19,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:47:19,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:47:19,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:47:19,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:47:19,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:47:19,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:47:19,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:47:19,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:47:19,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:47:19,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:47:19,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:47:19,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:47:19,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:47:19,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 10:47:19,060 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:47:19,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:47:19,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:47:19,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:47:19,061 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:47:19,062 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 10:47:19,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 10:47:19,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:47:19,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 10:47:19,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:47:19,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:47:19,064 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 10:47:19,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:47:19,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:47:19,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:47:19,064 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 10:47:19,065 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 10:47:19,065 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_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 -> 9016787135830d25851d4a1126db5f65005e4eb5 [2019-12-07 10:47:19,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:47:19,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:47:19,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:47:19,174 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:47:19,175 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:47:19,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2019-12-07 10:47:19,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/data/9376b82a9/a7d2971a9898457196805751c07938ce/FLAGed2bf4acf [2019-12-07 10:47:19,682 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:47:19,683 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2019-12-07 10:47:19,692 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/data/9376b82a9/a7d2971a9898457196805751c07938ce/FLAGed2bf4acf [2019-12-07 10:47:19,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/data/9376b82a9/a7d2971a9898457196805751c07938ce [2019-12-07 10:47:19,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:47:19,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:47:19,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:47:19,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:47:19,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:47:19,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:19,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513e5c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19, skipping insertion in model container [2019-12-07 10:47:19,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:19,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:47:19,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:47:19,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:47:19,936 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:47:19,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:47:19,990 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:47:19,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19 WrapperNode [2019-12-07 10:47:19,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:47:19,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:47:19,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:47:19,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:47:19,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:47:20,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:47:20,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:47:20,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:47:20,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... [2019-12-07 10:47:20,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:47:20,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:47:20,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:47:20,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:47:20,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:47:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:47:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:47:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:47:20,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:47:20,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:47:20,224 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:47:20,224 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 10:47:20,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:47:20 BoogieIcfgContainer [2019-12-07 10:47:20,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:47:20,226 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 10:47:20,226 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 10:47:20,228 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 10:47:20,228 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:47:20,229 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 10:47:19" (1/3) ... [2019-12-07 10:47:20,229 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34354ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 10:47:20, skipping insertion in model container [2019-12-07 10:47:20,229 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:47:20,229 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:47:19" (2/3) ... [2019-12-07 10:47:20,230 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34354ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 10:47:20, skipping insertion in model container [2019-12-07 10:47:20,230 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 10:47:20,230 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:47:20" (3/3) ... [2019-12-07 10:47:20,231 INFO L371 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-2.i [2019-12-07 10:47:20,260 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 10:47:20,260 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 10:47:20,260 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 10:47:20,260 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:47:20,260 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:47:20,260 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 10:47:20,260 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:47:20,261 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 10:47:20,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 10:47:20,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 10:47:20,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:20,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:20,287 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 10:47:20,287 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 10:47:20,287 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 10:47:20,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-12-07 10:47:20,289 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-12-07 10:47:20,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:20,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:20,289 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 10:47:20,289 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 10:47:20,294 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L551true assume !(main_~length~0 < 1); 18#L551-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 9#L553true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 13#L554-3true [2019-12-07 10:47:20,294 INFO L796 eck$LassoCheckResult]: Loop: 13#L554-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L556true assume main_~val~0 < 0;main_~val~0 := 0; 7#L556-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 11#L554-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 13#L554-3true [2019-12-07 10:47:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:20,298 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-12-07 10:47:20,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:20,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993183145] [2019-12-07 10:47:20,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,387 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:20,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2019-12-07 10:47:20,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:20,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443722898] [2019-12-07 10:47:20,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,401 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2019-12-07 10:47:20,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:20,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815550451] [2019-12-07 10:47:20,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:20,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:20,570 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 10:47:20,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 10:47:20,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 10:47:20,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 10:47:20,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 10:47:20,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:47:20,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 10:47:20,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 10:47:20,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration1_Lasso [2019-12-07 10:47:20,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 10:47:20,571 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 10:47:20,591 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 10:47:20,668 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 10:47:20,669 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 10:47:20,671 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 10:47:20,672 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 10:47:20,674 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 10:47:20,676 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 10:47:20,678 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 10:47:20,680 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 10:47:20,682 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 10:47:20,684 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 10:47:20,686 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 10:47:20,687 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 10:47:20,689 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 10:47:20,691 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 10:47:20,839 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 10:47:20,842 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,846 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 10:47:20,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:20,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:20,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:20,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:20,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:20,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:20,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:20,852 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,857 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 10:47:20,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:20,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:20,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:20,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:20,862 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:20,862 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:20,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,871 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 10:47:20,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:20,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:20,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:20,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:20,876 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:20,876 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:20,882 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,885 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 10:47:20,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:20,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:20,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:20,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:20,894 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:20,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:20,904 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 10:47:20,926 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-12-07 10:47:20,927 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:20,931 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 10:47:20,934 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 10:47:20,935 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 10:47:20,935 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-12-07 10:47:20,946 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 10:47:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:20,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 10:47:20,980 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:20,992 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 10:47:20,993 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:21,004 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 10:47:21,015 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 10:47:21,016 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-12-07 10:47:21,056 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2019-12-07 10:47:21,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 10:47:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-12-07 10:47:21,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 10:47:21,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 10:47:21,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2019-12-07 10:47:21,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2019-12-07 10:47:21,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 10:47:21,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2019-12-07 10:47:21,068 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 10:47:21,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 10:47:21,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-12-07 10:47:21,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 10:47:21,069 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 10:47:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-12-07 10:47:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 10:47:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 10:47:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2019-12-07 10:47:21,087 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 10:47:21,088 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 10:47:21,088 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 10:47:21,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2019-12-07 10:47:21,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 10:47:21,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:21,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:21,089 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:47:21,089 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 10:47:21,089 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L551 assume !(main_~length~0 < 1); 138#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 134#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 135#L554-3 assume !(main_~i~0 < main_~length~0); 139#L554-4 main_~j~0 := 0; 127#L561-3 [2019-12-07 10:47:21,089 INFO L796 eck$LassoCheckResult]: Loop: 127#L561-3 assume !!(main_~j~0 < main_~length~0); 128#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 140#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 141#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 127#L561-3 [2019-12-07 10:47:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2019-12-07 10:47:21,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836934555] [2019-12-07 10:47:21,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:21,126 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 10:47:21,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836934555] [2019-12-07 10:47:21,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:47:21,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:47:21,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876691030] [2019-12-07 10:47:21,129 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 10:47:21,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2019-12-07 10:47:21,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242914852] [2019-12-07 10:47:21,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,137 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:47:21,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:47:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:47:21,165 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 10:47:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:47:21,192 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-12-07 10:47:21,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:47:21,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2019-12-07 10:47:21,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 10:47:21,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2019-12-07 10:47:21,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 10:47:21,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 10:47:21,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2019-12-07 10:47:21,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 10:47:21,194 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-07 10:47:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2019-12-07 10:47:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-12-07 10:47:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 10:47:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-12-07 10:47:21,196 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 10:47:21,196 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-12-07 10:47:21,196 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 10:47:21,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-12-07 10:47:21,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 10:47:21,197 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:21,197 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:21,197 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:47:21,197 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 10:47:21,197 INFO L794 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 172#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 173#L551 assume !(main_~length~0 < 1); 178#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 174#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 175#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 169#L556 assume !(main_~val~0 < 0); 170#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 171#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 177#L554-3 assume !(main_~i~0 < main_~length~0); 179#L554-4 main_~j~0 := 0; 167#L561-3 [2019-12-07 10:47:21,198 INFO L796 eck$LassoCheckResult]: Loop: 167#L561-3 assume !!(main_~j~0 < main_~length~0); 168#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 180#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 181#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 167#L561-3 [2019-12-07 10:47:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2019-12-07 10:47:21,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648275056] [2019-12-07 10:47:21,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,220 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2019-12-07 10:47:21,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786805571] [2019-12-07 10:47:21,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,230 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2019-12-07 10:47:21,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369837734] [2019-12-07 10:47:21,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,253 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,393 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 10:47:21,394 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 10:47:21,394 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 10:47:21,394 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 10:47:21,394 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 10:47:21,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:47:21,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 10:47:21,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 10:47:21,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration3_Lasso [2019-12-07 10:47:21,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 10:47:21,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 10:47:21,397 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 10:47:21,399 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 10:47:21,401 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 10:47:21,490 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 10:47:21,492 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 10:47:21,493 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 10:47:21,495 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 10:47:21,496 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 10:47:21,497 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 10:47:21,499 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 10:47:21,500 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 10:47:21,501 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 10:47:21,503 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 10:47:21,504 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 10:47:21,638 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 10:47:21,639 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:21,641 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 10:47:21,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:21,642 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:21,642 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:21,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:21,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:21,643 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:21,643 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:21,644 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:21,648 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 10:47:21,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:21,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:21,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:21,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:21,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:21,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:21,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:21,650 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:21,655 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 10:47:21,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:21,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:21,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:21,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:21,659 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:21,659 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:21,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:21,667 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 10:47:21,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:21,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:21,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:21,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:21,675 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:21,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:21,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 10:47:21,728 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-12-07 10:47:21,728 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:21,731 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 10:47:21,734 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 10:47:21,734 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 10:47:21,734 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~arr~0.offset, ULTIMATE.start_main_~j~0, v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2) = -1*ULTIMATE.start_main_~arr~0.offset - 4*ULTIMATE.start_main_~j~0 + 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 Supporting invariants [] [2019-12-07 10:47:21,742 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 10:47:21,743 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-12-07 10:47:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:21,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 10:47:21,760 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:21,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 10:47:21,764 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:21,772 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 10:47:21,772 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 10:47:21,772 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 10:47:21,784 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2019-12-07 10:47:21,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 10:47:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2019-12-07 10:47:21,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-12-07 10:47:21,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-12-07 10:47:21,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-12-07 10:47:21,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:21,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-12-07 10:47:21,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:21,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 26 transitions. [2019-12-07 10:47:21,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 10:47:21,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-12-07 10:47:21,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-12-07 10:47:21,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 10:47:21,788 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-12-07 10:47:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-12-07 10:47:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-12-07 10:47:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 10:47:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2019-12-07 10:47:21,789 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-12-07 10:47:21,789 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-12-07 10:47:21,789 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 10:47:21,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2019-12-07 10:47:21,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:21,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:21,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:21,790 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:47:21,790 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 10:47:21,791 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 290#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 291#L551 assume !(main_~length~0 < 1); 297#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 292#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 293#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 287#L556 assume !(main_~val~0 < 0); 288#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 289#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 295#L554-3 assume !(main_~i~0 < main_~length~0); 296#L554-4 main_~j~0 := 0; 283#L561-3 assume !!(main_~j~0 < main_~length~0); 285#L562-3 [2019-12-07 10:47:21,791 INFO L796 eck$LassoCheckResult]: Loop: 285#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 298#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 285#L562-3 [2019-12-07 10:47:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2019-12-07 10:47:21,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254531378] [2019-12-07 10:47:21,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,806 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2019-12-07 10:47:21,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323112606] [2019-12-07 10:47:21,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:21,813 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2019-12-07 10:47:21,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:21,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81243421] [2019-12-07 10:47:21,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:21,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:21,954 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 10:47:21,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 10:47:21,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 10:47:21,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 10:47:21,954 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 10:47:21,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:47:21,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 10:47:21,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 10:47:21,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration4_Lasso [2019-12-07 10:47:21,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 10:47:21,955 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 10:47:21,957 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 10:47:21,958 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 10:47:21,959 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 10:47:21,961 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 10:47:21,963 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 10:47:21,965 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 10:47:21,966 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 10:47:22,064 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 10:47:22,066 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 10:47:22,067 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 10:47:22,068 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 10:47:22,070 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 10:47:22,071 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 10:47:22,073 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 10:47:22,232 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 10:47:22,232 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,237 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 10:47:22,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:22,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,238 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:22,238 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:22,240 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,244 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 10:47:22,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:22,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:22,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:22,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,251 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 10:47:22,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,255 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,259 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 10:47:22,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:22,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:22,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:22,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,265 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 10:47:22,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,274 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 10:47:22,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:22,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:22,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:22,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,283 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 10:47:22,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,288 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,288 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:47:22,299 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 10:47:22,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,300 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,300 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,300 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,302 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,302 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,307 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,311 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 10:47:22,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,314 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,314 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,324 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 10:47:22,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:22,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:22,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:22,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:22,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:22,327 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:22,333 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 10:47:22,340 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 10:47:22,341 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:22,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 10:47:22,352 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 10:47:22,352 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 10:47:22,352 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2 Supporting invariants [] [2019-12-07 10:47:22,360 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 10:47:22,362 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 10:47:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:22,383 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 10:47:22,384 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:22,391 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:47:22,391 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:22,401 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 10:47:22,402 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 10:47:22,402 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-12-07 10:47:22,430 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 8 states. [2019-12-07 10:47:22,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 10:47:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-12-07 10:47:22,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 2 letters. [2019-12-07 10:47:22,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:22,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 14 letters. Loop has 2 letters. [2019-12-07 10:47:22,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:22,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 4 letters. [2019-12-07 10:47:22,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:22,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2019-12-07 10:47:22,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:22,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 22 states and 28 transitions. [2019-12-07 10:47:22,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 10:47:22,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 10:47:22,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2019-12-07 10:47:22,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 10:47:22,433 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-12-07 10:47:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2019-12-07 10:47:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 10:47:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 10:47:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-12-07 10:47:22,435 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-12-07 10:47:22,435 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-12-07 10:47:22,435 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 10:47:22,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2019-12-07 10:47:22,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:22,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:22,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:22,436 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:47:22,436 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 10:47:22,436 INFO L794 eck$LassoCheckResult]: Stem: 429#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 425#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 426#L551 assume !(main_~length~0 < 1); 432#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 427#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 428#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 422#L556 assume !(main_~val~0 < 0); 423#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 424#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 430#L554-3 assume !(main_~i~0 < main_~length~0); 431#L554-4 main_~j~0 := 0; 417#L561-3 assume !!(main_~j~0 < main_~length~0); 418#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 434#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 435#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 419#L561-3 assume !!(main_~j~0 < main_~length~0); 421#L562-3 [2019-12-07 10:47:22,436 INFO L796 eck$LassoCheckResult]: Loop: 421#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 433#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 421#L562-3 [2019-12-07 10:47:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2019-12-07 10:47:22,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:22,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427976666] [2019-12-07 10:47:22,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:47:22,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427976666] [2019-12-07 10:47:22,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331585434] [2019-12-07 10:47:22,499 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:47:22,524 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 10:47:22,524 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 10:47:22,525 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 10:47:22,525 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:47:22,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:47:22,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2019-12-07 10:47:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914964184] [2019-12-07 10:47:22,566 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 10:47:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2019-12-07 10:47:22,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:22,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555419512] [2019-12-07 10:47:22,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,571 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:22,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:47:22,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 10:47:22,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-12-07 10:47:22,590 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 10 Second operand 14 states. [2019-12-07 10:47:22,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:47:22,758 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-12-07 10:47:22,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 10:47:22,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2019-12-07 10:47:22,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:22,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 28 states and 35 transitions. [2019-12-07 10:47:22,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-12-07 10:47:22,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-12-07 10:47:22,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2019-12-07 10:47:22,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 10:47:22,760 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-12-07 10:47:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2019-12-07 10:47:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-12-07 10:47:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 10:47:22,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-12-07 10:47:22,761 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-12-07 10:47:22,761 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-12-07 10:47:22,762 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 10:47:22,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2019-12-07 10:47:22,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 10:47:22,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 10:47:22,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 10:47:22,763 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:47:22,763 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 10:47:22,763 INFO L794 eck$LassoCheckResult]: Stem: 572#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 568#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 569#L551 assume !(main_~length~0 < 1); 576#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 570#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 571#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 575#L556 assume !(main_~val~0 < 0); 584#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 573#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 574#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 565#L556 assume !(main_~val~0 < 0); 566#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 567#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 582#L554-3 assume !(main_~i~0 < main_~length~0); 579#L554-4 main_~j~0 := 0; 560#L561-3 assume !!(main_~j~0 < main_~length~0); 561#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 583#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 581#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 562#L561-3 assume !!(main_~j~0 < main_~length~0); 564#L562-3 [2019-12-07 10:47:22,763 INFO L796 eck$LassoCheckResult]: Loop: 564#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 577#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post9;havoc main_#t~mem8; 564#L562-3 [2019-12-07 10:47:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,763 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2019-12-07 10:47:22,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:22,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168891592] [2019-12-07 10:47:22,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,779 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2019-12-07 10:47:22,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:22,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793927915] [2019-12-07 10:47:22,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,785 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2019-12-07 10:47:22,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:47:22,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748125275] [2019-12-07 10:47:22,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:47:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 10:47:22,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 10:47:22,960 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2019-12-07 10:47:22,999 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 10:47:22,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 10:47:22,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 10:47:23,000 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 10:47:23,000 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 10:47:23,000 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 10:47:23,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 10:47:23,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 10:47:23,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration6_Lasso [2019-12-07 10:47:23,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 10:47:23,000 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 10:47:23,002 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 10:47:23,003 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 10:47:23,004 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 10:47:23,006 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 10:47:23,074 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 10:47:23,075 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 10:47:23,076 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 10:47:23,077 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 10:47:23,078 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 10:47:23,080 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 10:47:23,081 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 10:47:23,082 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 10:47:23,083 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 10:47:23,084 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 10:47:23,085 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 10:47:23,219 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 10:47:23,219 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,222 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 10:47:23,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:23,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:23,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:23,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,229 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 10:47:23,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,231 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,231 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,238 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 10:47:23,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,240 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,242 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,247 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 10:47:23,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,250 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,250 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,260 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 10:47:23,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,262 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,265 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,270 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 10:47:23,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,273 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,273 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,276 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,281 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 10:47:23,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,283 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,283 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,285 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,288 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 10:47:23,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,291 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 10:47:23,291 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 10:47:23,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,300 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 10:47:23,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 10:47:23,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 10:47:23,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 10:47:23,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 10:47:23,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 10:47:23,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 10:47:23,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 10:47:23,303 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 10:47:23,305 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 10:47:23,305 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_886f2ccc-60d4-4867-bc85-fd49183c50a0/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 10:47:23,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 10:47:23,308 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 10:47:23,308 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 10:47:23,308 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] [2019-12-07 10:47:23,316 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-12-07 10:47:23,317 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 10:47:23,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,332 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,333 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,337 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,337 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,345 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 10:47:23,345 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 10:47:23,345 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 10:47:23,356 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-12-07 10:47:23,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 10:47:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 10:47:23,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 10:47:23,357 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:23,357 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 10:47:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,371 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,372 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,376 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,385 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 10:47:23,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 10:47:23,385 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 10:47:23,396 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-12-07 10:47:23,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 10:47:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 10:47:23,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 10:47:23,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:23,397 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 10:47:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:47:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,416 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:47:23,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 10:47:23,421 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:47:23,431 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 10:47:23,431 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 10:47:23,431 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 10:47:23,443 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2019-12-07 10:47:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 10:47:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 10:47:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-12-07 10:47:23,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2019-12-07 10:47:23,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:23,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2019-12-07 10:47:23,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:23,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2019-12-07 10:47:23,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 10:47:23,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-12-07 10:47:23,446 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 10:47:23,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-12-07 10:47:23,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 10:47:23,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 10:47:23,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 10:47:23,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 10:47:23,446 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:47:23,447 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:47:23,447 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:47:23,447 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 10:47:23,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:47:23,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 10:47:23,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 10:47:23,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 10:47:23 BoogieIcfgContainer [2019-12-07 10:47:23,451 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 10:47:23,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:47:23,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:47:23,452 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:47:23,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:47:20" (3/4) ... [2019-12-07 10:47:23,454 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 10:47:23,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:47:23,456 INFO L168 Benchmark]: Toolchain (without parser) took 3752.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.7 MB in the beginning and 849.9 MB in the end (delta: 94.8 MB). Peak memory consumption was 256.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:47:23,456 INFO L168 Benchmark]: CDTParser took 0.13 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 10:47:23,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:47:23,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.68 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 10:47:23,457 INFO L168 Benchmark]: Boogie Preprocessor took 17.02 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 10:47:23,458 INFO L168 Benchmark]: RCFGBuilder took 188.97 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:47:23,458 INFO L168 Benchmark]: BuchiAutomizer took 3225.69 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 849.9 MB in the end (delta: 212.3 MB). Peak memory consumption was 273.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:47:23,459 INFO L168 Benchmark]: Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 849.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:47:23,461 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.68 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 17.02 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. * RCFGBuilder took 188.97 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3225.69 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 60.8 MB). Free memory was 1.1 GB in the beginning and 849.9 MB in the end (delta: 212.3 MB). Peak memory consumption was 273.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.99 ms. Allocated memory is still 1.2 GB. Free memory is still 849.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * arr + -4 * j + unknown-#length-unknown[arr] and consists of 4 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr] and consists of 5 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 109 SDtfs, 223 SDslu, 84 SDs, 0 SdLazy, 192 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital132 mio100 ax113 hnf98 lsp82 ukn79 mio100 lsp56 div100 bol100 ite100 ukn100 eq161 hnf90 smp93 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...