./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 32bit --witnessprinter.graph.data.programhash bea41ba7ef8afa8e6ccd1150cee95a00bf0377da ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:31:49,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:31:49,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:31:49,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:31:49,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:31:49,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:31:49,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:31:49,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:31:49,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:31:49,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:31:49,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:31:49,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:31:49,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:31:49,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:31:49,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:31:49,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:31:49,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:31:49,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:31:49,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:31:49,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:31:49,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:31:49,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:31:49,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:31:49,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:31:49,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:31:49,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:31:49,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:31:49,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:31:49,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:31:49,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:31:49,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:31:49,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:31:49,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:31:49,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:31:49,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:31:49,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:31:49,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:31:49,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:31:49,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:31:49,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:31:49,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:31:49,114 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 11:31:49,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:31:49,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:31:49,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:31:49,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:31:49,141 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:31:49,142 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 11:31:49,142 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 11:31:49,142 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 11:31:49,142 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 11:31:49,142 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 11:31:49,142 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 11:31:49,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:31:49,143 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:31:49,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 11:31:49,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:31:49,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:31:49,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:31:49,145 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 11:31:49,145 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:31:49,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 11:31:49,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:31:49,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:31:49,145 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 11:31:49,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:31:49,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:31:49,146 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 11:31:49,147 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 11:31:49,147 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_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bea41ba7ef8afa8e6ccd1150cee95a00bf0377da [2019-11-20 11:31:49,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:31:49,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:31:49,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:31:49,309 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:31:49,310 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:31:49,311 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2019-11-20 11:31:49,377 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/data/6979afc18/5bb86e085738457bb62f551304fb4a6d/FLAGdeca975d1 [2019-11-20 11:31:49,762 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:31:49,762 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2019-11-20 11:31:49,781 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/data/6979afc18/5bb86e085738457bb62f551304fb4a6d/FLAGdeca975d1 [2019-11-20 11:31:50,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/data/6979afc18/5bb86e085738457bb62f551304fb4a6d [2019-11-20 11:31:50,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:31:50,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:31:50,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:31:50,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:31:50,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:31:50,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c22dcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50, skipping insertion in model container [2019-11-20 11:31:50,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,117 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:31:50,185 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:31:50,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:31:50,613 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:31:50,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:31:50,726 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:31:50,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50 WrapperNode [2019-11-20 11:31:50,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:31:50,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:31:50,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:31:50,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:31:50,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:31:50,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:31:50,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:31:50,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:31:50,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... [2019-11-20 11:31:50,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:31:50,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:31:50,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:31:50,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:31:50,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 11:31:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 11:31:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 11:31:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 11:31:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:31:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:31:51,350 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:31:51,350 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 11:31:51,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:51 BoogieIcfgContainer [2019-11-20 11:31:51,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:31:51,352 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 11:31:51,352 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 11:31:51,356 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 11:31:51,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 11:31:51,357 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 11:31:50" (1/3) ... [2019-11-20 11:31:51,358 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1583d7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:31:51, skipping insertion in model container [2019-11-20 11:31:51,359 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 11:31:51,359 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:31:50" (2/3) ... [2019-11-20 11:31:51,360 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1583d7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:31:51, skipping insertion in model container [2019-11-20 11:31:51,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 11:31:51,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:51" (3/3) ... [2019-11-20 11:31:51,362 INFO L371 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrncat-alloca-2.i [2019-11-20 11:31:51,400 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 11:31:51,401 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 11:31:51,401 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 11:31:51,401 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:31:51,401 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:31:51,402 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 11:31:51,402 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:31:51,402 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 11:31:51,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 11:31:51,433 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 10 [2019-11-20 11:31:51,434 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:51,434 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:51,439 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 11:31:51,439 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:51,439 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 11:31:51,439 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 11:31:51,442 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 10 [2019-11-20 11:31:51,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:51,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:51,443 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 11:31:51,443 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:51,449 INFO L794 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 22#L534true assume !(main_~length1~0 < 1); 8#L534-2true assume !(main_~length2~0 < 1); 5#L537-1true assume !(main_~n~0 < 1); 26#L540-1true assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 23#L547-3true [2019-11-20 11:31:51,449 INFO L796 eck$LassoCheckResult]: Loop: 23#L547-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 21#L547-2true main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 23#L547-3true [2019-11-20 11:31:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:51,453 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2019-11-20 11:31:51,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:51,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708798799] [2019-11-20 11:31:51,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:51,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2019, now seen corresponding path program 1 times [2019-11-20 11:31:51,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:51,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037455689] [2019-11-20 11:31:51,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,628 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash 180553841, now seen corresponding path program 1 times [2019-11-20 11:31:51,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:51,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798739839] [2019-11-20 11:31:51,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:51,678 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:51,987 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-20 11:31:52,088 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 11:31:52,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 11:31:52,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 11:31:52,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 11:31:52,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 11:31:52,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 11:31:52,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 11:31:52,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrncat-alloca-2.i_Iteration1_Lasso [2019-11-20 11:31:52,090 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 11:31:52,090 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 11:31:52,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,306 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2019-11-20 11:31:52,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:52,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 11:31:52,742 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:52,749 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:52,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:52,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:52,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:52,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,762 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:52,762 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:52,771 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:52,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:52,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:52,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:52,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:52,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:52,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:52,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:52,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,793 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:52,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:52,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:52,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:52,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:52,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:52,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:52,817 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:52,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,819 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:52,835 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:52,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:52,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:52,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:52,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:52,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:52,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:52,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:52,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:52,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:52,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:52,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:52,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:52,895 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:52,911 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 11:31:52,970 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-11-20 11:31:52,970 INFO L444 ModelExtractionUtils]: 15 out of 31 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:52,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 11:31:52,985 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 11:31:52,986 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 11:31:52,986 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 11:31:53,064 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2019-11-20 11:31:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:53,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 11:31:53,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:53,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 11:31:53,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:53,189 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 11:31:53,191 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 3 states. [2019-11-20 11:31:53,259 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 3 states. Result 64 states and 92 transitions. Complement of second has 7 states. [2019-11-20 11:31:53,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 11:31:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 11:31:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2019-11-20 11:31:53,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 64 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 11:31:53,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:53,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 64 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 11:31:53,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:53,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 64 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 11:31:53,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:53,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 92 transitions. [2019-11-20 11:31:53,286 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 11:31:53,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 20 states and 27 transitions. [2019-11-20 11:31:53,292 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-20 11:31:53,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-11-20 11:31:53,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2019-11-20 11:31:53,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:31:53,294 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-20 11:31:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2019-11-20 11:31:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 11:31:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 11:31:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2019-11-20 11:31:53,323 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-20 11:31:53,324 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2019-11-20 11:31:53,324 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 11:31:53,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2019-11-20 11:31:53,327 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 11:31:53,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:53,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:53,328 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:31:53,328 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:53,329 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 179#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 172#L534 assume !(main_~length1~0 < 1); 173#L534-2 assume !(main_~length2~0 < 1); 168#L537-1 assume !(main_~n~0 < 1); 169#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 174#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 175#L547-4 main_~i~1 := 0; 178#L552-3 [2019-11-20 11:31:53,329 INFO L796 eck$LassoCheckResult]: Loop: 178#L552-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet16, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet16; 183#L552-2 main_#t~post15 := main_~i~1;main_~i~1 := 1 + main_#t~post15;havoc main_#t~post15; 178#L552-3 [2019-11-20 11:31:53,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash 180553783, now seen corresponding path program 1 times [2019-11-20 11:31:53,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:53,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660302829] [2019-11-20 11:31:53,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:53,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660302829] [2019-11-20 11:31:53,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:31:53,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 11:31:53,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195423236] [2019-11-20 11:31:53,446 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 11:31:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 1 times [2019-11-20 11:31:53,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:53,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373520633] [2019-11-20 11:31:53,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,460 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:53,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:31:53,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 11:31:53,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 11:31:53,505 INFO L87 Difference]: Start difference. First operand 20 states and 27 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-20 11:31:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:31:53,573 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2019-11-20 11:31:53,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 11:31:53,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-20 11:31:53,575 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 11:31:53,576 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 27 transitions. [2019-11-20 11:31:53,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-11-20 11:31:53,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-11-20 11:31:53,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2019-11-20 11:31:53,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:31:53,577 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-20 11:31:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2019-11-20 11:31:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-20 11:31:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 11:31:53,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2019-11-20 11:31:53,594 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-20 11:31:53,594 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-20 11:31:53,595 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 11:31:53,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2019-11-20 11:31:53,595 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 11:31:53,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:53,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:53,596 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:31:53,596 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:53,596 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 232#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 225#L534 assume !(main_~length1~0 < 1); 226#L534-2 assume !(main_~length2~0 < 1); 221#L537-1 assume !(main_~n~0 < 1); 222#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 227#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 223#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 224#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 228#L547-4 main_~i~1 := 0; 231#L552-3 [2019-11-20 11:31:53,596 INFO L796 eck$LassoCheckResult]: Loop: 231#L552-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet16, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet16; 236#L552-2 main_#t~post15 := main_~i~1;main_~i~1 := 1 + main_#t~post15;havoc main_#t~post15; 231#L552-3 [2019-11-20 11:31:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1713550361, now seen corresponding path program 1 times [2019-11-20 11:31:53,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:53,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214601458] [2019-11-20 11:31:53,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,639 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 2 times [2019-11-20 11:31:53,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:53,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057415310] [2019-11-20 11:31:53,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:53,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1749424059, now seen corresponding path program 1 times [2019-11-20 11:31:53,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:53,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400881497] [2019-11-20 11:31:53,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:53,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400881497] [2019-11-20 11:31:53,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360766336] [2019-11-20 11:31:53,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:31:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:53,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:31:53,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:53,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:31:53,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2019-11-20 11:31:53,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034491813] [2019-11-20 11:31:53,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:31:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 11:31:53,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-20 11:31:53,925 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 10 Second operand 10 states. [2019-11-20 11:31:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:31:54,201 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-20 11:31:54,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 11:31:54,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2019-11-20 11:31:54,204 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 20 [2019-11-20 11:31:54,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 51 states and 63 transitions. [2019-11-20 11:31:54,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-20 11:31:54,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-20 11:31:54,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 63 transitions. [2019-11-20 11:31:54,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:31:54,211 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-20 11:31:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 63 transitions. [2019-11-20 11:31:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 29. [2019-11-20 11:31:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 11:31:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-20 11:31:54,216 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-20 11:31:54,216 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-20 11:31:54,216 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 11:31:54,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2019-11-20 11:31:54,217 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2019-11-20 11:31:54,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:54,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:54,221 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:31:54,221 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:54,222 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 369#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 362#L534 assume !(main_~length1~0 < 1); 363#L534-2 assume !(main_~length2~0 < 1); 370#L537-1 assume !(main_~n~0 < 1); 376#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 377#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 382#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 381#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 380#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 379#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 378#L547-4 main_~i~1 := 0; 375#L552-3 [2019-11-20 11:31:54,222 INFO L796 eck$LassoCheckResult]: Loop: 375#L552-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet16, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet16; 374#L552-2 main_#t~post15 := main_~i~1;main_~i~1 := 1 + main_#t~post15;havoc main_#t~post15; 375#L552-3 [2019-11-20 11:31:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1749479291, now seen corresponding path program 2 times [2019-11-20 11:31:54,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:54,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036568265] [2019-11-20 11:31:54,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,284 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:54,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2467, now seen corresponding path program 3 times [2019-11-20 11:31:54,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:54,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778452240] [2019-11-20 11:31:54,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,306 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:54,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1917387421, now seen corresponding path program 2 times [2019-11-20 11:31:54,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:54,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472855509] [2019-11-20 11:31:54,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:54,337 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:54,706 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-11-20 11:31:54,807 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 11:31:54,807 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 11:31:54,807 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 11:31:54,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 11:31:54,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 11:31:54,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:54,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 11:31:54,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 11:31:54,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrncat-alloca-2.i_Iteration4_Lasso [2019-11-20 11:31:54,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 11:31:54,808 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 11:31:54,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,965 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-11-20 11:31:54,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:54,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:55,369 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 11:31:55,370 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:55,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:55,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:55,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,408 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:55,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:55,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:55,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:55,415 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:55,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:55,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:55,421 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:55,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:55,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:55,465 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,478 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,485 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:55,492 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,511 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,516 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,526 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,530 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,530 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:55,537 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:55,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:55,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:55,578 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:55,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:55,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:55,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:55,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:55,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:55,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:55,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 11:31:55,650 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2019-11-20 11:31:55,650 INFO L444 ModelExtractionUtils]: 18 out of 34 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:55,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:55,670 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 11:31:55,670 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 11:31:55,670 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2019-11-20 11:31:55,692 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2019-11-20 11:31:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:55,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 11:31:55,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:55,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 11:31:55,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:55,744 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 11:31:55,745 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-11-20 11:31:55,772 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 39 states and 54 transitions. Complement of second has 6 states. [2019-11-20 11:31:55,773 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 [2019-11-20 11:31:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 11:31:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-11-20 11:31:55,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 12 letters. Loop has 2 letters. [2019-11-20 11:31:55,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:55,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 14 letters. Loop has 2 letters. [2019-11-20 11:31:55,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:55,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-20 11:31:55,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:31:55,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 54 transitions. [2019-11-20 11:31:55,776 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 11:31:55,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 30 states and 40 transitions. [2019-11-20 11:31:55,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-11-20 11:31:55,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-20 11:31:55,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 40 transitions. [2019-11-20 11:31:55,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:31:55,777 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-11-20 11:31:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 40 transitions. [2019-11-20 11:31:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-20 11:31:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 11:31:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-11-20 11:31:55,780 INFO L711 BuchiCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-11-20 11:31:55,780 INFO L591 BuchiCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-11-20 11:31:55,780 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 11:31:55,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 40 transitions. [2019-11-20 11:31:55,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 11:31:55,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:55,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:55,784 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:31:55,785 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:55,785 INFO L794 eck$LassoCheckResult]: Stem: 529#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 526#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 519#L534 assume !(main_~length1~0 < 1); 520#L534-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 515#L537-1 assume !(main_~n~0 < 1); 516#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 521#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 517#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 518#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 522#L547-4 main_~i~1 := 0; 525#L552-3 assume !(main_~i~1 < main_~length2~0 - 1); 511#L552-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~dst.base, cstrncat_#in~dst.offset, cstrncat_#in~src.base, cstrncat_#in~src.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post5.base, cstrncat_#t~post5.offset, cstrncat_#t~mem6, cstrncat_#t~post7.base, cstrncat_#t~post7.offset, cstrncat_#t~pre4, cstrncat_~d~0.base, cstrncat_~d~0.offset, cstrncat_~s~0.base, cstrncat_~s~0.offset, cstrncat_~dst.base, cstrncat_~dst.offset, cstrncat_~src.base, cstrncat_~src.offset, cstrncat_~n;cstrncat_~dst.base, cstrncat_~dst.offset := cstrncat_#in~dst.base, cstrncat_#in~dst.offset;cstrncat_~src.base, cstrncat_~src.offset := cstrncat_#in~src.base, cstrncat_#in~src.offset;cstrncat_~n := cstrncat_#in~n; 512#L516 assume 0 != cstrncat_~n % 4294967296;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_~dst.base, cstrncat_~dst.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~src.base, cstrncat_~src.offset; 513#L519-3 [2019-11-20 11:31:55,785 INFO L796 eck$LassoCheckResult]: Loop: 513#L519-3 call cstrncat_#t~mem2 := read~int(cstrncat_~d~0.base, cstrncat_~d~0.offset, 1); 514#L519-1 assume !!(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2;cstrncat_#t~post3.base, cstrncat_#t~post3.offset := cstrncat_~d~0.base, cstrncat_~d~0.offset;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_#t~post3.base, 1 + cstrncat_#t~post3.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset; 513#L519-3 [2019-11-20 11:31:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:55,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1209403751, now seen corresponding path program 1 times [2019-11-20 11:31:55,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:55,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572571020] [2019-11-20 11:31:55,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:55,838 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:55,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:55,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2918, now seen corresponding path program 1 times [2019-11-20 11:31:55,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:55,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948482074] [2019-11-20 11:31:55,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:55,862 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1699134462, now seen corresponding path program 1 times [2019-11-20 11:31:55,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:55,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388451967] [2019-11-20 11:31:55,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:56,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388451967] [2019-11-20 11:31:56,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940553885] [2019-11-20 11:31:56,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:31:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:56,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-20 11:31:56,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:56,334 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 11:31:56,354 INFO L343 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2019-11-20 11:31:56,354 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2019-11-20 11:31:56,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:31:56,372 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:31:56,373 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 11:31:56,373 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:54, output treesize:35 [2019-11-20 11:31:56,452 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 11:31:56,454 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:31:56,455 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 10 [2019-11-20 11:31:56,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:31:56,465 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:31:56,466 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:31:56,466 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2019-11-20 11:31:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:31:56,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 11:31:56,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-11-20 11:31:56,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678078416] [2019-11-20 11:31:56,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:31:56,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 11:31:56,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-11-20 11:31:56,503 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. cyclomatic complexity: 15 Second operand 16 states. [2019-11-20 11:31:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:31:57,377 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2019-11-20 11:31:57,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 11:31:57,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 76 transitions. [2019-11-20 11:31:57,379 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 20 [2019-11-20 11:31:57,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 64 states and 76 transitions. [2019-11-20 11:31:57,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2019-11-20 11:31:57,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2019-11-20 11:31:57,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 76 transitions. [2019-11-20 11:31:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:31:57,382 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 76 transitions. [2019-11-20 11:31:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 76 transitions. [2019-11-20 11:31:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2019-11-20 11:31:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-20 11:31:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2019-11-20 11:31:57,388 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2019-11-20 11:31:57,389 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2019-11-20 11:31:57,389 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 11:31:57,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 49 transitions. [2019-11-20 11:31:57,390 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 11:31:57,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:31:57,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:31:57,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:31:57,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:31:57,391 INFO L794 eck$LassoCheckResult]: Stem: 715#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 712#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 703#L534 assume !(main_~length1~0 < 1); 704#L534-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 699#L537-1 assume !(main_~n~0 < 1); 700#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 705#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 706#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 707#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 701#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 702#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 731#L547-4 main_~i~1 := 0; 721#L552-3 assume !(main_~i~1 < main_~length2~0 - 1); 694#L552-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~dst.base, cstrncat_#in~dst.offset, cstrncat_#in~src.base, cstrncat_#in~src.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post5.base, cstrncat_#t~post5.offset, cstrncat_#t~mem6, cstrncat_#t~post7.base, cstrncat_#t~post7.offset, cstrncat_#t~pre4, cstrncat_~d~0.base, cstrncat_~d~0.offset, cstrncat_~s~0.base, cstrncat_~s~0.offset, cstrncat_~dst.base, cstrncat_~dst.offset, cstrncat_~src.base, cstrncat_~src.offset, cstrncat_~n;cstrncat_~dst.base, cstrncat_~dst.offset := cstrncat_#in~dst.base, cstrncat_#in~dst.offset;cstrncat_~src.base, cstrncat_~src.offset := cstrncat_#in~src.base, cstrncat_#in~src.offset;cstrncat_~n := cstrncat_#in~n; 695#L516 assume 0 != cstrncat_~n % 4294967296;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_~dst.base, cstrncat_~dst.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~src.base, cstrncat_~src.offset; 696#L519-3 [2019-11-20 11:31:57,391 INFO L796 eck$LassoCheckResult]: Loop: 696#L519-3 call cstrncat_#t~mem2 := read~int(cstrncat_~d~0.base, cstrncat_~d~0.offset, 1); 728#L519-1 assume !!(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2;cstrncat_#t~post3.base, cstrncat_#t~post3.offset := cstrncat_~d~0.base, cstrncat_~d~0.offset;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_#t~post3.base, 1 + cstrncat_#t~post3.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset; 696#L519-3 [2019-11-20 11:31:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash -948699273, now seen corresponding path program 2 times [2019-11-20 11:31:57,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:57,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362446562] [2019-11-20 11:31:57,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2918, now seen corresponding path program 2 times [2019-11-20 11:31:57,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:57,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979617083] [2019-11-20 11:31:57,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,448 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1166932644, now seen corresponding path program 2 times [2019-11-20 11:31:57,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:31:57,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602487567] [2019-11-20 11:31:57,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:31:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:31:57,482 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:31:58,151 WARN L191 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 137 [2019-11-20 11:31:58,340 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2019-11-20 11:31:58,342 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 11:31:58,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 11:31:58,342 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 11:31:58,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 11:31:58,342 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 11:31:58,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:58,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 11:31:58,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 11:31:58,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrncat-alloca-2.i_Iteration6_Lasso [2019-11-20 11:31:58,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 11:31:58,343 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 11:31:58,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,705 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2019-11-20 11:31:58,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:58,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:31:59,071 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-11-20 11:31:59,343 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-11-20 11:31:59,463 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 11:31:59,463 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,471 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:59,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,478 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:59,485 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:31:59,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,518 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,518 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,532 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,537 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,545 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,548 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,550 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,566 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,577 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,579 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,586 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,597 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:59,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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) [2019-11-20 11:31:59,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,626 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/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 [2019-11-20 11:31:59,630 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,637 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,642 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,645 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,645 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:59,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,655 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 [2019-11-20 11:31:59,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,658 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:31:59,663 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,666 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,667 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,683 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:31:59,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:31:59,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:31:59,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:31:59,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:31:59,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:31:59,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:31:59,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:31:59,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:31:59,716 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:31:59,745 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 11:31:59,787 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2019-11-20 11:31:59,787 INFO L444 ModelExtractionUtils]: 15 out of 64 variables were initially zero. Simplification set additionally 44 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:31:59,791 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 11:31:59,793 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-20 11:31:59,794 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 11:31:59,794 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrncat_~d~0.offset) = -2*ULTIMATE.start_cstrncat_~d~0.offset + 5 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_cstrncat_~d~0.base)_1 + 3 >= 0] [2019-11-20 11:31:59,835 INFO L297 tatePredicateManager]: 13 out of 14 supporting invariants were superfluous and have been removed [2019-11-20 11:31:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:31:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:59,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 11:31:59,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:31:59,884 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_90|], 1=[|v_#valid_114|]} [2019-11-20 11:31:59,888 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 11:31:59,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-20 11:31:59,890 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 11:31:59,902 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:31:59,910 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-20 11:31:59,910 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 11:31:59,920 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 11:31:59,920 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 11:31:59,921 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:22, output treesize:10 [2019-11-20 11:31:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:31:59,988 WARN L253 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 11:31:59,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:32:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:32:00,003 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.6 stem predicates 2 loop predicates [2019-11-20 11:32:00,003 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 49 transitions. cyclomatic complexity: 16 Second operand 8 states. [2019-11-20 11:32:00,261 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 49 transitions. cyclomatic complexity: 16. Second operand 8 states. Result 68 states and 88 transitions. Complement of second has 15 states. [2019-11-20 11:32:00,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 8 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-20 11:32:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 11:32:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 44 transitions. [2019-11-20 11:32:00,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 15 letters. Loop has 2 letters. [2019-11-20 11:32:00,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:00,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 17 letters. Loop has 2 letters. [2019-11-20 11:32:00,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:00,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 44 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 11:32:00,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:00,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2019-11-20 11:32:00,265 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 11:32:00,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 40 states and 50 transitions. [2019-11-20 11:32:00,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-20 11:32:00,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-20 11:32:00,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 50 transitions. [2019-11-20 11:32:00,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:32:00,266 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 50 transitions. [2019-11-20 11:32:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 50 transitions. [2019-11-20 11:32:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2019-11-20 11:32:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 11:32:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2019-11-20 11:32:00,269 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-11-20 11:32:00,270 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2019-11-20 11:32:00,270 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 11:32:00,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 45 transitions. [2019-11-20 11:32:00,270 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 11:32:00,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 11:32:00,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 11:32:00,271 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:32:00,272 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 11:32:00,272 INFO L794 eck$LassoCheckResult]: Stem: 984#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 981#L-1 havoc main_#res;havoc main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~nondet14, main_#t~post13, main_~i~0, main_#t~nondet16, main_#t~post15, main_~i~1, main_#t~ret17.base, main_#t~ret17.offset, main_~length1~0, main_~length2~0, main_~n~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length2~0 := main_#t~nondet9;havoc main_#t~nondet9;main_~n~0 := main_#t~nondet10;havoc main_#t~nondet10; 972#L534 assume !(main_~length1~0 < 1); 973#L534-2 assume main_~length2~0 < 1;main_~length2~0 := 1; 982#L537-1 assume !(main_~n~0 < 1); 999#L540-1 assume !(main_~length1~0 < main_~n~0 || main_~length1~0 - main_~n~0 < main_~length2~0);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;main_~i~0 := 0; 998#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 997#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 996#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 995#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 994#L547-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet14, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet14; 993#L547-2 main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13; 992#L547-3 assume !(main_~i~0 < main_~length1~0 - 1); 979#L547-4 main_~i~1 := 0; 980#L552-3 assume !(main_~i~1 < main_~length2~0 - 1); 964#L552-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - main_~n~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrncat_#in~dst.base, cstrncat_#in~dst.offset, cstrncat_#in~src.base, cstrncat_#in~src.offset, cstrncat_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~n~0;havoc cstrncat_#res.base, cstrncat_#res.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset, cstrncat_#t~mem2, cstrncat_#t~post5.base, cstrncat_#t~post5.offset, cstrncat_#t~mem6, cstrncat_#t~post7.base, cstrncat_#t~post7.offset, cstrncat_#t~pre4, cstrncat_~d~0.base, cstrncat_~d~0.offset, cstrncat_~s~0.base, cstrncat_~s~0.offset, cstrncat_~dst.base, cstrncat_~dst.offset, cstrncat_~src.base, cstrncat_~src.offset, cstrncat_~n;cstrncat_~dst.base, cstrncat_~dst.offset := cstrncat_#in~dst.base, cstrncat_#in~dst.offset;cstrncat_~src.base, cstrncat_~src.offset := cstrncat_#in~src.base, cstrncat_#in~src.offset;cstrncat_~n := cstrncat_#in~n; 965#L516 assume 0 != cstrncat_~n % 4294967296;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_~dst.base, cstrncat_~dst.offset;cstrncat_~s~0.base, cstrncat_~s~0.offset := cstrncat_~src.base, cstrncat_~src.offset; 966#L519-3 [2019-11-20 11:32:00,272 INFO L796 eck$LassoCheckResult]: Loop: 966#L519-3 call cstrncat_#t~mem2 := read~int(cstrncat_~d~0.base, cstrncat_~d~0.offset, 1); 967#L519-1 assume !!(0 != cstrncat_#t~mem2);havoc cstrncat_#t~mem2;cstrncat_#t~post3.base, cstrncat_#t~post3.offset := cstrncat_~d~0.base, cstrncat_~d~0.offset;cstrncat_~d~0.base, cstrncat_~d~0.offset := cstrncat_#t~post3.base, 1 + cstrncat_#t~post3.offset;havoc cstrncat_#t~post3.base, cstrncat_#t~post3.offset; 966#L519-3 [2019-11-20 11:32:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:32:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash 480200917, now seen corresponding path program 3 times [2019-11-20 11:32:00,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:32:00,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173185430] [2019-11-20 11:32:00,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:32:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,305 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:32:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:32:00,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2918, now seen corresponding path program 3 times [2019-11-20 11:32:00,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:32:00,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727213074] [2019-11-20 11:32:00,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:32:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,311 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:32:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:32:00,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1911582522, now seen corresponding path program 3 times [2019-11-20 11:32:00,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:32:00,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053215672] [2019-11-20 11:32:00,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:32:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:32:00,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:32:01,360 WARN L191 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 141 [2019-11-20 11:32:01,536 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-11-20 11:32:01,538 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 11:32:01,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 11:32:01,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 11:32:01,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 11:32:01,538 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 11:32:01,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:01,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 11:32:01,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 11:32:01,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrncat-alloca-2.i_Iteration7_Lasso [2019-11-20 11:32:01,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 11:32:01,539 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 11:32:01,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:01,882 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2019-11-20 11:32:01,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 11:32:02,165 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2019-11-20 11:32:02,439 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 11:32:02,440 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,450 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,471 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:32:02,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,517 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,518 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,521 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,534 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,542 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,567 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,571 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,575 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,579 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,587 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 11:32:02,591 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,606 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,606 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,625 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,647 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,653 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,667 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 [2019-11-20 11:32:02,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,671 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,671 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,674 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,681 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,684 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,684 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,688 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,694 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,709 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,713 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,713 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,739 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,742 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,747 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,750 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,758 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,760 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,763 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 11:32:02,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 11:32:02,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,775 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,780 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 11:32:02,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,782 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,782 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,782 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,786 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,786 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:32:02,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 11:32:02,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 11:32:02,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 11:32:02,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 11:32:02,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 11:32:02,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 11:32:02,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 11:32:02,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 11:32:02,865 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-20 11:32:02,865 INFO L444 ModelExtractionUtils]: 15 out of 61 variables were initially zero. Simplification set additionally 43 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01dd0de5-d50b-4575-8f79-0b0a0feca855/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 11:32:02,868 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 11:32:02,870 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 11:32:02,870 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 11:32:02,870 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrncat_~d~0.base)_2, ULTIMATE.start_cstrncat_~d~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrncat_~d~0.base)_2 - 1*ULTIMATE.start_cstrncat_~d~0.offset Supporting invariants [] [2019-11-20 11:32:02,889 INFO L297 tatePredicateManager]: 9 out of 9 supporting invariants were superfluous and have been removed [2019-11-20 11:32:02,890 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 11:32:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:32:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:32:02,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 11:32:02,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:32:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:32:02,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 11:32:02,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:32:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:32:02,942 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 11:32:02,942 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-11-20 11:32:02,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 14. Second operand 3 states. Result 43 states and 54 transitions. Complement of second has 6 states. [2019-11-20 11:32:02,954 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 [2019-11-20 11:32:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 11:32:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2019-11-20 11:32:02,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 17 letters. Loop has 2 letters. [2019-11-20 11:32:02,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:02,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 19 letters. Loop has 2 letters. [2019-11-20 11:32:02,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:02,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 17 letters. Loop has 4 letters. [2019-11-20 11:32:02,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 11:32:02,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-20 11:32:02,957 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 11:32:02,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-20 11:32:02,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 11:32:02,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 11:32:02,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 11:32:02,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 11:32:02,957 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:32:02,957 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:32:02,957 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 11:32:02,957 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 11:32:02,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 11:32:02,958 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 11:32:02,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 11:32:02,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 11:32:02 BoogieIcfgContainer [2019-11-20 11:32:02,963 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 11:32:02,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:32:02,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:32:02,963 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:32:02,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:31:51" (3/4) ... [2019-11-20 11:32:02,967 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 11:32:02,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:32:02,968 INFO L168 Benchmark]: Toolchain (without parser) took 12868.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 938.0 MB in the beginning and 875.5 MB in the end (delta: 62.5 MB). Peak memory consumption was 272.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:32:02,969 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:32:02,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:32:02,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 11:32:02,970 INFO L168 Benchmark]: Boogie Preprocessor took 41.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:32:02,970 INFO L168 Benchmark]: RCFGBuilder took 522.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-20 11:32:02,971 INFO L168 Benchmark]: BuchiAutomizer took 11610.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 875.5 MB in the end (delta: 203.9 MB). Peak memory consumption was 288.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:32:02,971 INFO L168 Benchmark]: Witness Printer took 4.24 ms. Allocated memory is still 1.2 GB. Free memory is still 875.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:32:02,973 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 625.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -168.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 522.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11610.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 84.9 MB). Free memory was 1.1 GB in the beginning and 875.5 MB in the end (delta: 203.9 MB). Peak memory consumption was 288.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.24 ms. Allocated memory is still 1.2 GB. Free memory is still 875.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + length2 and consists of 4 locations. One deterministic module has affine ranking function -2 * d + 5 and consists of 12 locations. One deterministic module has affine ranking function unknown-#length-unknown[d] + -1 * d and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.5s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 9.3s. Construction of modules took 0.3s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 7. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 53 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 38 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 142 SDtfs, 479 SDslu, 314 SDs, 0 SdLazy, 268 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU1 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital201 mio100 ax109 hnf98 lsp85 ukn74 mio100 lsp60 div107 bol100 ite100 ukn100 eq168 hnf88 smp96 dnf100 smp100 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...