./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --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_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 4335483d0b28de4d854f33f949d3555a767d1bde ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:42:38,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:42:38,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:42:38,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:42:38,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:42:38,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:42:38,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:42:38,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:42:38,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:42:38,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:42:38,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:42:38,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:42:38,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:42:38,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:42:38,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:42:38,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:42:38,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:42:38,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:42:38,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:42:38,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:42:38,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:42:38,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:42:38,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:42:38,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:42:38,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:42:38,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:42:38,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:42:38,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:42:38,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:42:38,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:42:38,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:42:38,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:42:38,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:42:38,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:42:38,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:42:38,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:42:38,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:42:38,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:42:38,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:42:38,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:42:38,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:42:38,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 01:42:38,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:42:38,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:42:38,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:42:38,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:42:38,925 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:42:38,925 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 01:42:38,925 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 01:42:38,925 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 01:42:38,926 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 01:42:38,926 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 01:42:38,927 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 01:42:38,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:42:38,927 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:42:38,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:42:38,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:42:38,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:42:38,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:42:38,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 01:42:38,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 01:42:38,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 01:42:38,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:42:38,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:42:38,929 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 01:42:38,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:42:38,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 01:42:38,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:42:38,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:42:38,930 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 01:42:38,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:42:38,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:42:38,930 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 01:42:38,931 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 01:42:38,932 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_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 -> 4335483d0b28de4d854f33f949d3555a767d1bde [2019-11-20 01:42:39,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:42:39,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:42:39,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:42:39,100 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:42:39,100 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:42:39,101 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/../../sv-benchmarks/c/loops/invert_string-1.c [2019-11-20 01:42:39,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/data/4f947de8f/679f288847fa477d91a234b0cd12d8f4/FLAG8a82ed9a0 [2019-11-20 01:42:39,584 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:42:39,584 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/sv-benchmarks/c/loops/invert_string-1.c [2019-11-20 01:42:39,591 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/data/4f947de8f/679f288847fa477d91a234b0cd12d8f4/FLAG8a82ed9a0 [2019-11-20 01:42:39,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/data/4f947de8f/679f288847fa477d91a234b0cd12d8f4 [2019-11-20 01:42:39,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:42:39,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:42:39,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:42:39,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:42:39,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:42:39,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dfd83e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39, skipping insertion in model container [2019-11-20 01:42:39,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,623 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:42:39,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:42:39,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:42:39,829 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:42:39,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:42:39,922 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:42:39,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39 WrapperNode [2019-11-20 01:42:39,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:42:39,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:42:39,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:42:39,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:42:39,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:42:39,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:42:39,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:42:39,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:42:39,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... [2019-11-20 01:42:39,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:42:39,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:42:39,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:42:39,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:42:39,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 01:42:40,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:42:40,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:42:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 01:42:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:42:40,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:42:40,241 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:42:40,241 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 01:42:40,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:42:40 BoogieIcfgContainer [2019-11-20 01:42:40,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:42:40,243 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 01:42:40,243 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 01:42:40,246 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 01:42:40,247 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:42:40,247 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 01:42:39" (1/3) ... [2019-11-20 01:42:40,248 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b498e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:42:40, skipping insertion in model container [2019-11-20 01:42:40,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:42:40,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:42:39" (2/3) ... [2019-11-20 01:42:40,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b498e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:42:40, skipping insertion in model container [2019-11-20 01:42:40,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:42:40,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:42:40" (3/3) ... [2019-11-20 01:42:40,250 INFO L371 chiAutomizerObserver]: Analyzing ICFG invert_string-1.c [2019-11-20 01:42:40,293 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 01:42:40,294 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 01:42:40,294 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 01:42:40,294 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:42:40,294 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:42:40,294 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 01:42:40,294 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:42:40,294 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 01:42:40,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 01:42:40,326 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-20 01:42:40,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:40,326 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:40,332 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 01:42:40,332 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:42:40,332 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 01:42:40,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 01:42:40,334 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-20 01:42:40,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:40,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:40,335 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 01:42:40,335 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:42:40,342 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 10#L-1true havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 6#L20-3true [2019-11-20 01:42:40,342 INFO L796 eck$LassoCheckResult]: Loop: 6#L20-3true assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 7#L20-2true main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 6#L20-3true [2019-11-20 01:42:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-20 01:42:40,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:40,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342737875] [2019-11-20 01:42:40,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,487 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-11-20 01:42:40,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:40,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052990351] [2019-11-20 01:42:40,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-11-20 01:42:40,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:40,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062738920] [2019-11-20 01:42:40,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:40,556 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:40,816 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-20 01:42:41,014 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-11-20 01:42:41,024 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:42:41,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:42:41,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:42:41,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:42:41,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:42:41,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:42:41,025 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:42:41,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration1_Lasso [2019-11-20 01:42:41,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:42:41,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:42:41,044 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 01:42:41,049 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 01:42:41,052 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 01:42:41,057 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 01:42:41,059 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 01:42:41,062 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 01:42:41,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:41,181 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 01:42:41,486 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:42:41,491 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,498 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 01:42:41,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:42:41,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,524 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 01:42:41,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,528 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 01:42:41,531 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,546 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 01:42:41,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:41,555 INFO L402 nArgumentSynthesizer]: A total of 2 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 01:42:41,560 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,578 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 01:42:41,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:42:41,583 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,602 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 01:42:41,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,606 INFO L402 nArgumentSynthesizer]: A total of 0 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 01:42:41,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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) [2019-11-20 01:42:41,627 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 01:42:41,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,634 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:42:41,651 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 01:42:41,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,660 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:41,661 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,665 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,683 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 01:42:41,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,688 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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) [2019-11-20 01:42:41,707 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 01:42:41,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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) [2019-11-20 01:42:41,732 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 01:42:41,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:41,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:41,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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) [2019-11-20 01:42:41,760 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 01:42:41,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,771 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:41,771 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,777 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,794 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 01:42:41,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:41,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:41,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:42:41,804 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,819 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 01:42:41,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:41,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:41,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:41,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:41,834 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:41,834 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:41,845 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,902 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-20 01:42:41,902 INFO L444 ModelExtractionUtils]: 5 out of 19 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:41,921 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:41,957 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 01:42:41,958 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:42:41,958 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~MAX~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~MAX~0 Supporting invariants [] [2019-11-20 01:42:41,979 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 01:42:42,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:42,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:42:42,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:42,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:42:42,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:42,063 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 01:42:42,078 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 01:42:42,079 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2019-11-20 01:42:42,134 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 33 states and 47 transitions. Complement of second has 8 states. [2019-11-20 01:42:42,135 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 01:42:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:42:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-20 01:42:42,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 01:42:42,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:42,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 01:42:42,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:42,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-20 01:42:42,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:42,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2019-11-20 01:42:42,144 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 01:42:42,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2019-11-20 01:42:42,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:42:42,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 01:42:42,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-11-20 01:42:42,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:42:42,151 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-20 01:42:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-11-20 01:42:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 01:42:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 01:42:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2019-11-20 01:42:42,177 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-20 01:42:42,177 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-11-20 01:42:42,177 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 01:42:42,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2019-11-20 01:42:42,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-20 01:42:42,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:42,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:42,179 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 01:42:42,179 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:42:42,179 INFO L794 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 112#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 107#L20-3 assume !(main_~i~0 < main_~MAX~0); 105#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 106#L27-3 [2019-11-20 01:42:42,180 INFO L796 eck$LassoCheckResult]: Loop: 106#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 115#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 106#L27-3 [2019-11-20 01:42:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2019-11-20 01:42:42,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:42,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993771128] [2019-11-20 01:42:42,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:42,233 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 01:42:42,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993771128] [2019-11-20 01:42:42,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:42:42,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:42:42,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437648735] [2019-11-20 01:42:42,238 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 01:42:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2019-11-20 01:42:42,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:42,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733975359] [2019-11-20 01:42:42,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:42,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:42:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:42:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:42:42,336 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 01:42:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:42:42,360 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 01:42:42,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:42:42,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-20 01:42:42,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 01:42:42,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2019-11-20 01:42:42,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:42:42,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 01:42:42,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-11-20 01:42:42,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:42:42,364 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-20 01:42:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-11-20 01:42:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-20 01:42:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 01:42:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-20 01:42:42,366 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 01:42:42,366 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-20 01:42:42,366 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 01:42:42,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2019-11-20 01:42:42,367 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 01:42:42,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:42,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:42,368 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-20 01:42:42,368 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:42:42,368 INFO L794 eck$LassoCheckResult]: Stem: 143#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 139#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 140#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 146#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 147#L20-3 assume !(main_~i~0 < main_~MAX~0); 144#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 145#L27-3 [2019-11-20 01:42:42,368 INFO L796 eck$LassoCheckResult]: Loop: 145#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 149#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 145#L27-3 [2019-11-20 01:42:42,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2019-11-20 01:42:42,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:42,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364587473] [2019-11-20 01:42:42,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,456 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2019-11-20 01:42:42,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:42,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366909519] [2019-11-20 01:42:42,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,478 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash 265181135, now seen corresponding path program 1 times [2019-11-20 01:42:42,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:42,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218802189] [2019-11-20 01:42:42,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:42,576 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:42,902 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-11-20 01:42:43,090 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-11-20 01:42:43,092 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:42:43,092 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:42:43,092 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:42:43,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:42:43,092 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:42:43,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:43,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:42:43,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:42:43,093 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration3_Lasso [2019-11-20 01:42:43,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:42:43,093 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:42:43,096 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 01:42:43,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:43,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:43,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:43,240 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 01:42:43,243 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 01:42:43,245 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 01:42:43,247 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 01:42:43,249 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 01:42:43,252 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 01:42:43,254 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 01:42:43,257 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 01:42:43,259 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 01:42:43,261 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 01:42:43,264 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 01:42:43,590 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:42:43,590 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,611 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 01:42:43,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:43,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:43,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:43,615 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,630 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 01:42:43,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:43,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:43,634 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 01:42:43,635 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,645 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 01:42:43,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:43,652 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:43,658 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,671 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 01:42:43,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:43,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:43,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:43,694 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 01:42:43,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,702 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:43,702 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:43,707 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,721 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 01:42:43,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:43,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:43,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:43,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:43,733 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:43,733 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:43,747 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:42:43,801 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-11-20 01:42:43,801 INFO L444 ModelExtractionUtils]: 3 out of 25 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:43,810 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:42:43,812 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 01:42:43,813 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:42:43,813 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2, ULTIMATE.start_main_~#str2~0.offset, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str2~0.base)_2 - 1*ULTIMATE.start_main_~#str2~0.offset - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-20 01:42:43,827 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 01:42:43,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 01:42:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:43,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:42:43,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:43,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:42:43,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:43,890 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 01:42:43,890 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 01:42:43,890 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 01:42:43,898 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2019-11-20 01:42:43,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:42:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:42:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-20 01:42:43,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 01:42:43,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:43,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 01:42:43,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:43,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 01:42:43,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:43,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2019-11-20 01:42:43,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:42:43,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 19 transitions. [2019-11-20 01:42:43,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 01:42:43,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 01:42:43,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 19 transitions. [2019-11-20 01:42:43,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:42:43,904 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-20 01:42:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 19 transitions. [2019-11-20 01:42:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-20 01:42:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 01:42:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-20 01:42:43,906 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 01:42:43,906 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 01:42:43,906 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 01:42:43,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-11-20 01:42:43,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:42:43,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:43,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:43,907 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:42:43,908 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 01:42:43,908 INFO L794 eck$LassoCheckResult]: Stem: 230#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 224#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 225#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 233#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 234#L20-3 assume !(main_~i~0 < main_~MAX~0); 231#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 232#L27-3 assume !(main_~i~0 >= 0); 235#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 227#L33-3 [2019-11-20 01:42:43,908 INFO L796 eck$LassoCheckResult]: Loop: 227#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 228#L5 assume !(0 == __VERIFIER_assert_~cond); 229#L5-2 havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 226#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 227#L33-3 [2019-11-20 01:42:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 265181077, now seen corresponding path program 1 times [2019-11-20 01:42:43,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:43,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352754122] [2019-11-20 01:42:43,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:42:43,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352754122] [2019-11-20 01:42:43,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:42:43,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 01:42:43,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749331406] [2019-11-20 01:42:43,945 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 01:42:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 1 times [2019-11-20 01:42:43,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:43,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560090960] [2019-11-20 01:42:43,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:43,959 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:44,101 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-11-20 01:42:44,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:42:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:42:44,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:42:44,102 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 01:42:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:42:44,139 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-20 01:42:44,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:42:44,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-20 01:42:44,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:42:44,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 01:42:44,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:42:44,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 01:42:44,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2019-11-20 01:42:44,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:42:44,141 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 01:42:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2019-11-20 01:42:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-20 01:42:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 01:42:44,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 01:42:44,143 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 01:42:44,143 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 01:42:44,143 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 01:42:44,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-11-20 01:42:44,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:42:44,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:42:44,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:42:44,145 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:42:44,145 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 01:42:44,145 INFO L794 eck$LassoCheckResult]: Stem: 269#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 265#L-1 havoc main_#res;havoc main_#t~nondet1, main_#t~nondet3, main_#t~post2, main_#t~mem5, main_#t~post6, main_#t~post4, main_#t~mem8, main_#t~mem9, main_#t~post10, main_#t~post7, main_~MAX~0, main_~#str1~0.base, main_~#str1~0.offset, main_~#str2~0.base, main_~#str2~0.offset, main_~cont~0, main_~i~0, main_~j~0;main_~MAX~0 := (if main_#t~nondet1 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet1 % 4294967296 % 4294967296 else main_#t~nondet1 % 4294967296 % 4294967296 - 4294967296);havoc main_#t~nondet1;assume 0 != (if main_~MAX~0 > 0 then 1 else 0);call main_~#str1~0.base, main_~#str1~0.offset := #Ultimate.allocOnStack(main_~MAX~0);call main_~#str2~0.base, main_~#str2~0.offset := #Ultimate.allocOnStack(main_~MAX~0);havoc main_~cont~0;havoc main_~i~0;havoc main_~j~0;main_~cont~0 := 0;main_~i~0 := 0; 266#L20-3 assume !!(main_~i~0 < main_~MAX~0);call write~int(main_#t~nondet3, main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);havoc main_#t~nondet3; 272#L20-2 main_#t~post2 := main_~i~0;main_~i~0 := 1 + main_#t~post2;havoc main_#t~post2; 273#L20-3 assume !(main_~i~0 < main_~MAX~0); 270#L20-4 call write~int(0, main_~#str1~0.base, main_~#str1~0.offset + (main_~MAX~0 - 1), 1);main_~j~0 := 0;main_~i~0 := main_~MAX~0 - 1; 271#L27-3 assume !!(main_~i~0 >= 0);call main_#t~mem5 := read~int(main_~#str1~0.base, main_~#str1~0.offset, 1);call write~int(main_#t~mem5, main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);havoc main_#t~mem5;main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 277#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := main_#t~post4 - 1;havoc main_#t~post4; 275#L27-3 assume !(main_~i~0 >= 0); 274#L27-4 main_~j~0 := main_~MAX~0 - 1;main_~i~0 := 0; 264#L33-3 [2019-11-20 01:42:44,145 INFO L796 eck$LassoCheckResult]: Loop: 264#L33-3 assume !!(main_~i~0 < main_~MAX~0);call main_#t~mem8 := read~int(main_~#str1~0.base, main_~#str1~0.offset + main_~i~0, 1);call main_#t~mem9 := read~int(main_~#str2~0.base, main_~#str2~0.offset + main_~j~0, 1);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_#t~mem9 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 267#L5 assume !(0 == __VERIFIER_assert_~cond); 268#L5-2 havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10 := main_~j~0;main_~j~0 := main_#t~post10 - 1;havoc main_#t~post10; 263#L33-2 main_#t~post7 := main_~i~0;main_~i~0 := 1 + main_#t~post7;havoc main_#t~post7; 264#L33-3 [2019-11-20 01:42:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:44,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1436000983, now seen corresponding path program 1 times [2019-11-20 01:42:44,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:44,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90170984] [2019-11-20 01:42:44,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,216 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:44,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2100362, now seen corresponding path program 2 times [2019-11-20 01:42:44,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:44,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951048764] [2019-11-20 01:42:44,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,245 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:44,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1461824416, now seen corresponding path program 1 times [2019-11-20 01:42:44,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:42:44,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450347820] [2019-11-20 01:42:44,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:42:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:42:44,286 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:42:44,740 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2019-11-20 01:42:44,913 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-20 01:42:44,915 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:42:44,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:42:44,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:42:44,916 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:42:44,916 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:42:44,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:44,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:42:44,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:42:44,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-1.c_Iteration5_Lasso [2019-11-20 01:42:44,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:42:44,916 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:42:44,920 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 01:42:44,923 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 01:42:44,924 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 01:42:44,926 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 01:42:44,929 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 01:42:44,930 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 01:42:45,087 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 01:42:45,090 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 01:42:45,094 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 01:42:45,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:45,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:45,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:45,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:42:45,106 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 01:42:45,107 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 01:42:45,109 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 01:42:45,414 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:42:45,414 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:45,434 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 01:42:45,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:45,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,437 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:45,437 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 01:42:45,439 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:45,444 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 01:42:45,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:45,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:45,447 INFO L402 nArgumentSynthesizer]: A total of 0 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 01:42:45,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:45,462 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 01:42:45,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,464 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:45,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,465 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:45,465 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 01:42:45,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:45,472 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:45,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:45,475 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:42:45,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:45,482 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 01:42:45,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:42:45,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:42:45,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:42:45,486 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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 01:42:45,499 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 01:42:45,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:42:45,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:42:45,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:42:45,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:42:45,511 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:42:45,511 INFO L402 nArgumentSynthesizer]: A total of 2 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 01:42:45,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:42:45,571 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-11-20 01:42:45,571 INFO L444 ModelExtractionUtils]: 9 out of 25 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_460cdc80-76d2-4de7-9c2d-bb466fc37d27/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) [2019-11-20 01:42:45,575 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:42:45,578 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-20 01:42:45,578 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:42:45,579 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~#str1~0.base)_3 + 2*ULTIMATE.start_main_~j~0 Supporting invariants [-1*ULTIMATE.start_main_~#str2~0.offset >= 0] [2019-11-20 01:42:45,613 INFO L297 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2019-11-20 01:42:45,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 01:42:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:42:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:45,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 01:42:45,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:42:45,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:42:45,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:42:45,750 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 01:42:45,751 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2019-11-20 01:42:45,751 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-20 01:42:45,788 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 20 states and 23 transitions. Complement of second has 7 states. [2019-11-20 01:42:45,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:42:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 01:42:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-20 01:42:45,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-20 01:42:45,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:45,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-20 01:42:45,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:45,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-20 01:42:45,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:42:45,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2019-11-20 01:42:45,791 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:42:45,791 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2019-11-20 01:42:45,791 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 01:42:45,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 01:42:45,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 01:42:45,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:42:45,792 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:42:45,792 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:42:45,792 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:42:45,792 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 01:42:45,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:42:45,792 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:42:45,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 01:42:45,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 01:42:45 BoogieIcfgContainer [2019-11-20 01:42:45,800 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 01:42:45,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:42:45,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:42:45,801 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:42:45,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:42:40" (3/4) ... [2019-11-20 01:42:45,805 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:42:45,805 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:42:45,807 INFO L168 Benchmark]: Toolchain (without parser) took 6197.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 948.7 MB in the beginning and 973.2 MB in the end (delta: -24.4 MB). Peak memory consumption was 159.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:42:45,807 INFO L168 Benchmark]: CDTParser took 0.22 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 01:42:45,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:42:45,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.94 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 01:42:45,812 INFO L168 Benchmark]: Boogie Preprocessor took 22.79 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:42:45,813 INFO L168 Benchmark]: RCFGBuilder took 267.56 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:42:45,814 INFO L168 Benchmark]: BuchiAutomizer took 5556.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 973.2 MB in the end (delta: 140.4 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:42:45,815 INFO L168 Benchmark]: Witness Printer took 5.08 ms. Allocated memory is still 1.2 GB. Free memory is still 973.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:42:45,823 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 310.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.79 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 267.56 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5556.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.9 MB). Free memory was 1.1 GB in the beginning and 973.2 MB in the end (delta: 140.4 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.08 ms. Allocated memory is still 1.2 GB. Free memory is still 973.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + MAX and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[str2] + -1 * str2 + -1 * j and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[str1] + 2 * j and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 4.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 40 SDtfs, 36 SDslu, 12 SDs, 0 SdLazy, 40 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital164 mio100 ax100 hnf100 lsp92 ukn60 mio100 lsp68 div160 bol100 ite100 ukn100 eq158 hnf69 smp94 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...