./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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 97f817c294f65682bc18734ad52a0295ea6b342c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:44:19,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:44:19,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:44:19,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:44:19,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:44:19,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:44:19,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:44:19,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:44:19,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:44:19,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:44:19,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:44:19,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:44:19,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:44:19,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:44:19,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:44:19,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:44:19,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:44:19,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:44:19,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:44:19,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:44:19,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:44:19,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:44:19,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:44:19,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:44:19,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:44:19,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:44:19,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:44:19,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:44:19,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:44:19,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:44:19,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:44:19,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:44:19,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:44:19,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:44:19,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:44:19,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:44:19,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:44:19,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:44:19,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:44:19,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:44:19,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:44:19,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-12-01 15:44:19,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:44:19,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:44:19,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:44:19,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:44:19,964 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:44:19,964 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:44:19,964 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:44:19,964 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:44:19,965 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:44:19,965 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:44:19,965 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:44:19,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:44:19,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:44:19,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:44:19,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:44:19,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:44:19,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:44:19,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:44:19,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:44:19,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:44:19,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:44:19,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:44:19,968 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:44:19,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:44:19,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:44:19,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:44:19,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:44:19,970 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:44:19,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:44:19,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:44:19,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:44:19,971 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:44:19,972 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:44:19,973 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97f817c294f65682bc18734ad52a0295ea6b342c [2020-12-01 15:44:20,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:44:20,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:44:20,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:44:20,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:44:20,329 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:44:20,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i [2020-12-01 15:44:20,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/data/9853fae54/350c02c33b9848abbdd24b4343e1d0bf/FLAGf55b8d7fd [2020-12-01 15:44:21,097 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:44:21,098 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/sv-benchmarks/c/array-memsafety/openbsd_cstpcpy-alloca-1.i [2020-12-01 15:44:21,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/data/9853fae54/350c02c33b9848abbdd24b4343e1d0bf/FLAGf55b8d7fd [2020-12-01 15:44:21,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/data/9853fae54/350c02c33b9848abbdd24b4343e1d0bf [2020-12-01 15:44:21,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:44:21,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:44:21,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:21,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:44:21,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:44:21,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:21" (1/1) ... [2020-12-01 15:44:21,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e3da4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:21, skipping insertion in model container [2020-12-01 15:44:21,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:44:21" (1/1) ... [2020-12-01 15:44:21,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:44:21,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:44:21,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:21,890 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:44:21,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:44:22,049 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:44:22,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22 WrapperNode [2020-12-01 15:44:22,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:44:22,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:22,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:44:22,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:44:22,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:44:22,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:44:22,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:44:22,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:44:22,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... [2020-12-01 15:44:22,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:44:22,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:44:22,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:44:22,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:44:22,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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 [2020-12-01 15:44:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:44:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:44:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:44:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:44:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:44:22,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:44:22,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:44:22,526 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-01 15:44:22,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:22 BoogieIcfgContainer [2020-12-01 15:44:22,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:44:22,530 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:44:22,530 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:44:22,534 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:44:22,535 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:44:22,536 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:44:21" (1/3) ... [2020-12-01 15:44:22,537 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d21f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:44:22, skipping insertion in model container [2020-12-01 15:44:22,538 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:44:22,538 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:44:22" (2/3) ... [2020-12-01 15:44:22,538 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d21f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:44:22, skipping insertion in model container [2020-12-01 15:44:22,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:44:22,539 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:22" (3/3) ... [2020-12-01 15:44:22,540 INFO L389 chiAutomizerObserver]: Analyzing ICFG openbsd_cstpcpy-alloca-1.i [2020-12-01 15:44:22,595 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:44:22,595 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:44:22,596 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:44:22,596 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:44:22,596 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:44:22,596 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:44:22,596 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:44:22,597 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:44:22,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-12-01 15:44:22,632 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 15:44:22,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:44:22,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:44:22,640 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-12-01 15:44:22,641 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:44:22,641 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:44:22,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-12-01 15:44:22,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-12-01 15:44:22,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:44:22,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:44:22,645 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-12-01 15:44:22,645 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-12-01 15:44:22,654 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#L-1true havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length1~0, main_~length2~0, main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length1~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~length2~0 := main_#t~nondet6;havoc main_#t~nondet6; 10#L521true assume !(main_~length1~0 < 1); 13#L521-2true assume !(main_~length2~0 < 1); 6#L524-1true assume !(main_~length1~0 < main_~length2~0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 16#L531-3true [2020-12-01 15:44:22,654 INFO L796 eck$LassoCheckResult]: Loop: 16#L531-3true assume !!(main_~i~0 < main_~length2~0);call write~int(main_#t~nondet10, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 15#L531-2true main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 16#L531-3true [2020-12-01 15:44:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 28695882, now seen corresponding path program 1 times [2020-12-01 15:44:22,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:22,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714112753] [2020-12-01 15:44:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:22,804 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:22,829 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:22,872 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1827, now seen corresponding path program 1 times [2020-12-01 15:44:22,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:22,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474769300] [2020-12-01 15:44:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:22,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:22,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:22,906 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:22,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939692, now seen corresponding path program 1 times [2020-12-01 15:44:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:22,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254786235] [2020-12-01 15:44:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:22,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:23,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:23,034 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:23,309 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-12-01 15:44:23,419 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:44:23,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:44:23,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:44:23,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:44:23,422 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:44:23,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:23,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:44:23,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:44:23,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstpcpy-alloca-1.i_Iteration1_Lasso [2020-12-01 15:44:23,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:44:23,423 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:44:23,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:23,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:24,041 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:44:24,046 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,069 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 [2020-12-01 15:44:24,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,085 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,086 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,147 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 [2020-12-01 15:44:24,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,153 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 [2020-12-01 15:44:24,164 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-12-01 15:44:24,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,214 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-12-01 15:44:24,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,292 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,336 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 [2020-12-01 15:44:24,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,349 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,407 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 [2020-12-01 15:44:24,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,415 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 [2020-12-01 15:44:24,423 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,469 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 [2020-12-01 15:44:24,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,475 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:24,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,538 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 [2020-12-01 15:44:24,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,548 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,550 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:24,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,621 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 [2020-12-01 15:44:24,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,632 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,648 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,698 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:44:24,720 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,752 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 [2020-12-01 15:44:24,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,754 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,763 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,763 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:24,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,829 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 [2020-12-01 15:44:24,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:24,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:24,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,844 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:24,893 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 [2020-12-01 15:44:24,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:24,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-12-01 15:44:24,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:24,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:24,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:24,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:24,967 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:24,967 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:24,984 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:25,014 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 [2020-12-01 15:44:25,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:25,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:25,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:25,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:25,021 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:25,021 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:25,038 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:25,085 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 [2020-12-01 15:44:25,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:25,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:25,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:25,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:25,099 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:25,100 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:25,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:44:25,168 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-12-01 15:44:25,168 INFO L444 ModelExtractionUtils]: 14 out of 28 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:25,235 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:25,254 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-12-01 15:44:25,255 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:44:25,255 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2020-12-01 15:44:25,330 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-12-01 15:44:25,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:25,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:44:25,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:25,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:44:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:25,469 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 [2020-12-01 15:44:25,470 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 3 states. [2020-12-01 15:44:25,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 3 states. Result 39 states and 50 transitions. Complement of second has 7 states. [2020-12-01 15:44:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-12-01 15:44:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-12-01 15:44:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2020-12-01 15:44:25,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 5 letters. Loop has 2 letters. [2020-12-01 15:44:25,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:25,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 7 letters. Loop has 2 letters. [2020-12-01 15:44:25,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:25,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 5 letters. Loop has 4 letters. [2020-12-01 15:44:25,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:25,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2020-12-01 15:44:25,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:25,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 12 states and 16 transitions. [2020-12-01 15:44:25,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-12-01 15:44:25,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-12-01 15:44:25,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2020-12-01 15:44:25,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:44:25,592 INFO L692 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-12-01 15:44:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2020-12-01 15:44:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-01 15:44:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-01 15:44:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-12-01 15:44:25,624 INFO L715 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-12-01 15:44:25,624 INFO L595 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-12-01 15:44:25,625 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:44:25,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-12-01 15:44:25,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:25,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:44:25,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:44:25,626 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:25,627 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:44:25,627 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 127#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length1~0, main_~length2~0, main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length1~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~length2~0 := main_#t~nondet6;havoc main_#t~nondet6; 128#L521 assume !(main_~length1~0 < 1); 129#L521-2 assume !(main_~length2~0 < 1); 133#L524-1 assume !(main_~length1~0 < main_~length2~0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 136#L531-3 assume !(main_~i~0 < main_~length2~0); 138#L531-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length2~0 - 1), 1);cstpcpy_#in~to.base, cstpcpy_#in~to.offset, cstpcpy_#in~from.base, cstpcpy_#in~from.offset := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;havoc cstpcpy_#res.base, cstpcpy_#res.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset, cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset, cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, cstpcpy_~from.base, cstpcpy_~from.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_#in~to.base, cstpcpy_#in~to.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_#in~from.base, cstpcpy_#in~from.offset; 137#L515-4 [2020-12-01 15:44:25,627 INFO L796 eck$LassoCheckResult]: Loop: 137#L515-4 call cstpcpy_#t~mem4 := read~int(cstpcpy_~from.base, cstpcpy_~from.offset, 1);call write~int(cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, 1); 131#L515-1 assume !!(0 != cstpcpy_#t~mem4);havoc cstpcpy_#t~mem4; 132#L515-3 cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset;cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;havoc cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset; 137#L515-4 [2020-12-01 15:44:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1806939634, now seen corresponding path program 1 times [2020-12-01 15:44:25,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:25,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240806366] [2020-12-01 15:44:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240806366] [2020-12-01 15:44:25,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:44:25,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:44:25,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327955697] [2020-12-01 15:44:25,753 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-12-01 15:44:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:25,753 INFO L82 PathProgramCache]: Analyzing trace with hash 66694, now seen corresponding path program 1 times [2020-12-01 15:44:25,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:25,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424281036] [2020-12-01 15:44:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:25,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:25,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:25,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:25,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:44:25,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:44:25,915 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2020-12-01 15:44:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:25,969 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-12-01 15:44:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:44:25,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2020-12-01 15:44:25,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:25,978 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2020-12-01 15:44:25,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-12-01 15:44:25,979 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-12-01 15:44:25,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2020-12-01 15:44:25,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:44:25,979 INFO L692 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-01 15:44:25,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2020-12-01 15:44:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-01 15:44:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-01 15:44:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-12-01 15:44:25,985 INFO L715 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-12-01 15:44:25,986 INFO L595 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-12-01 15:44:25,986 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-12-01 15:44:25,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-12-01 15:44:25,988 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:25,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:44:25,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:44:25,990 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:25,990 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:44:25,990 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 159#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length1~0, main_~length2~0, main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length1~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~length2~0 := main_#t~nondet6;havoc main_#t~nondet6; 160#L521 assume !(main_~length1~0 < 1); 161#L521-2 assume !(main_~length2~0 < 1); 165#L524-1 assume !(main_~length1~0 < main_~length2~0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 168#L531-3 assume !!(main_~i~0 < main_~length2~0);call write~int(main_#t~nondet10, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 166#L531-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 167#L531-3 assume !(main_~i~0 < main_~length2~0); 169#L531-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length2~0 - 1), 1);cstpcpy_#in~to.base, cstpcpy_#in~to.offset, cstpcpy_#in~from.base, cstpcpy_#in~from.offset := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;havoc cstpcpy_#res.base, cstpcpy_#res.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset, cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset, cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, cstpcpy_~from.base, cstpcpy_~from.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_#in~to.base, cstpcpy_#in~to.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_#in~from.base, cstpcpy_#in~from.offset; 170#L515-4 [2020-12-01 15:44:25,990 INFO L796 eck$LassoCheckResult]: Loop: 170#L515-4 call cstpcpy_#t~mem4 := read~int(cstpcpy_~from.base, cstpcpy_~from.offset, 1);call write~int(cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, 1); 163#L515-1 assume !!(0 != cstpcpy_#t~mem4);havoc cstpcpy_#t~mem4; 164#L515-3 cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset;cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;havoc cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset; 170#L515-4 [2020-12-01 15:44:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1302257236, now seen corresponding path program 1 times [2020-12-01 15:44:25,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:25,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260166447] [2020-12-01 15:44:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:26,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:26,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:26,081 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash 66694, now seen corresponding path program 2 times [2020-12-01 15:44:26,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:26,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495861032] [2020-12-01 15:44:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:26,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:26,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:26,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash -894230189, now seen corresponding path program 1 times [2020-12-01 15:44:26,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:26,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172681534] [2020-12-01 15:44:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172681534] [2020-12-01 15:44:26,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369621223] [2020-12-01 15:44:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:44:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:44:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:26,773 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-01 15:44:26,775 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:44:26,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:44:26,797 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 15:44:26,797 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-12-01 15:44:26,911 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-01 15:44:26,914 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:44:26,916 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2020-12-01 15:44:26,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:44:26,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:44:26,941 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:44:26,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:33, output treesize:3 [2020-12-01 15:44:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:26,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:44:26,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-12-01 15:44:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720819506] [2020-12-01 15:44:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:44:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:44:27,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:44:27,059 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 12 states. [2020-12-01 15:44:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:44:27,455 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-12-01 15:44:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:44:27,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 21 transitions. [2020-12-01 15:44:27,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:27,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 15 states and 18 transitions. [2020-12-01 15:44:27,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-12-01 15:44:27,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-12-01 15:44:27,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2020-12-01 15:44:27,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:44:27,461 INFO L692 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-12-01 15:44:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2020-12-01 15:44:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-01 15:44:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-01 15:44:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-01 15:44:27,465 INFO L715 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-01 15:44:27,465 INFO L595 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-01 15:44:27,466 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-12-01 15:44:27,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2020-12-01 15:44:27,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-12-01 15:44:27,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:44:27,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:44:27,474 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:44:27,474 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 15:44:27,474 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 249#L-1 havoc main_#res;havoc main_#t~nondet5, main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~nondet10, main_#t~post9, main_~i~0, main_#t~ret11.base, main_#t~ret11.offset, main_~length1~0, main_~length2~0, main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;main_~length1~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~length2~0 := main_#t~nondet6;havoc main_#t~nondet6; 250#L521 assume !(main_~length1~0 < 1); 251#L521-2 assume !(main_~length2~0 < 1); 255#L524-1 assume !(main_~length1~0 < main_~length2~0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetArea~0.base, main_~nondetArea~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString~0.base, main_~nondetString~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;main_~i~0 := 0; 258#L531-3 assume !!(main_~i~0 < main_~length2~0);call write~int(main_#t~nondet10, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 256#L531-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 257#L531-3 assume !!(main_~i~0 < main_~length2~0);call write~int(main_#t~nondet10, main_~nondetString~0.base, main_~nondetString~0.offset + main_~i~0, 1);havoc main_#t~nondet10; 259#L531-2 main_#t~post9 := main_~i~0;main_~i~0 := 1 + main_#t~post9;havoc main_#t~post9; 262#L531-3 assume !(main_~i~0 < main_~length2~0); 261#L531-4 call write~int(0, main_~nondetString~0.base, main_~nondetString~0.offset + (main_~length2~0 - 1), 1);cstpcpy_#in~to.base, cstpcpy_#in~to.offset, cstpcpy_#in~from.base, cstpcpy_#in~from.offset := main_~nondetArea~0.base, main_~nondetArea~0.offset, main_~nondetString~0.base, main_~nondetString~0.offset;havoc cstpcpy_#res.base, cstpcpy_#res.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset, cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset, cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, cstpcpy_~from.base, cstpcpy_~from.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_#in~to.base, cstpcpy_#in~to.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_#in~from.base, cstpcpy_#in~from.offset; 260#L515-4 [2020-12-01 15:44:27,474 INFO L796 eck$LassoCheckResult]: Loop: 260#L515-4 call cstpcpy_#t~mem4 := read~int(cstpcpy_~from.base, cstpcpy_~from.offset, 1);call write~int(cstpcpy_#t~mem4, cstpcpy_~to.base, cstpcpy_~to.offset, 1); 253#L515-1 assume !!(0 != cstpcpy_#t~mem4);havoc cstpcpy_#t~mem4; 254#L515-3 cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;cstpcpy_~from.base, cstpcpy_~from.offset := cstpcpy_~from.base, 1 + cstpcpy_~from.offset;havoc cstpcpy_#t~pre2.base, cstpcpy_#t~pre2.offset;cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;cstpcpy_~to.base, cstpcpy_~to.offset := cstpcpy_~to.base, 1 + cstpcpy_~to.offset;havoc cstpcpy_#t~pre3.base, cstpcpy_#t~pre3.offset; 260#L515-4 [2020-12-01 15:44:27,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1633777206, now seen corresponding path program 2 times [2020-12-01 15:44:27,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711651264] [2020-12-01 15:44:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,555 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash 66694, now seen corresponding path program 3 times [2020-12-01 15:44:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144098800] [2020-12-01 15:44:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,589 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:27,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:27,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1287382577, now seen corresponding path program 2 times [2020-12-01 15:44:27,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:44:27,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353299763] [2020-12-01 15:44:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:44:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:44:27,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:44:27,657 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:44:28,268 WARN L197 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2020-12-01 15:44:28,432 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-01 15:44:28,435 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:44:28,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:44:28,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:44:28,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:44:28,438 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:44:28,439 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:28,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:44:28,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:44:28,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstpcpy-alloca-1.i_Iteration4_Lasso [2020-12-01 15:44:28,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:44:28,439 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:44:28,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,717 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-12-01 15:44:28,875 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-01 15:44:28,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:28,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:44:29,135 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-12-01 15:44:29,537 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:44:29,538 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:29,596 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 [2020-12-01 15:44:29,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:29,597 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:29,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:29,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:29,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:29,599 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:29,599 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:44:29,611 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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 [2020-12-01 15:44:29,632 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 [2020-12-01 15:44:29,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:29,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:29,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:29,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:29,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:29,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:29,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:44:29,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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 [2020-12-01 15:44:29,658 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 [2020-12-01 15:44:29,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:29,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:44:29,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:29,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:29,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:29,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:44:29,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:44:29,661 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:29,683 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 [2020-12-01 15:44:29,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:29,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:29,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:29,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:29,688 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:29,688 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:29,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:29,715 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 [2020-12-01 15:44:29,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:44:29,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:44:29,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:44:29,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:44:29,751 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:44:29,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:44:29,776 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:44:29,837 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2020-12-01 15:44:29,837 INFO L444 ModelExtractionUtils]: 30 out of 49 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b74e7ef5-6307-4220-9bf5-b0d32d2036a1/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) [2020-12-01 15:44:29,840 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:44:29,863 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-12-01 15:44:29,863 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:44:29,863 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc7.base)_2, ULTIMATE.start_cstpcpy_~to.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc7.base)_2 - 1*ULTIMATE.start_cstpcpy_~to.offset Supporting invariants [] [2020-12-01 15:44:29,933 INFO L297 tatePredicateManager]: 10 out of 11 supporting invariants were superfluous and have been removed [2020-12-01 15:44:29,936 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-12-01 15:44:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:44:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:29,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:44:29,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:44:30,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:44:30,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:44:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:44:30,073 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-12-01 15:44:30,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-12-01 15:44:30,119 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2020-12-01 15:44:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:44:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-12-01 15:44:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-12-01 15:44:30,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 3 letters. [2020-12-01 15:44:30,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:30,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 3 letters. [2020-12-01 15:44:30,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:30,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 11 letters. Loop has 6 letters. [2020-12-01 15:44:30,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:44:30,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-12-01 15:44:30,124 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:44:30,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-12-01 15:44:30,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 15:44:30,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 15:44:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 15:44:30,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:44:30,125 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:44:30,125 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:44:30,125 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:44:30,126 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-12-01 15:44:30,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:44:30,126 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:44:30,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 15:44:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:44:30 BoogieIcfgContainer [2020-12-01 15:44:30,133 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:44:30,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:44:30,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:44:30,135 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:44:30,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:44:22" (3/4) ... [2020-12-01 15:44:30,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:44:30,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:44:30,142 INFO L168 Benchmark]: Toolchain (without parser) took 8772.81 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 98.6 MB in the beginning and 116.6 MB in the end (delta: -18.0 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,143 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:44:30,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.51 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 94.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.20 ms. Allocated memory is still 130.0 MB. Free memory was 94.3 MB in the beginning and 92.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,150 INFO L168 Benchmark]: Boogie Preprocessor took 34.38 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 91.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,151 INFO L168 Benchmark]: RCFGBuilder took 380.27 ms. Allocated memory is still 130.0 MB. Free memory was 91.3 MB in the beginning and 75.8 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,151 INFO L168 Benchmark]: BuchiAutomizer took 7603.36 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 75.8 MB in the beginning and 116.6 MB in the end (delta: -40.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:44:30,153 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 188.7 MB. Free memory is still 116.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:44:30,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 673.51 ms. Allocated memory is still 130.0 MB. Free memory was 98.6 MB in the beginning and 94.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.20 ms. Allocated memory is still 130.0 MB. Free memory was 94.3 MB in the beginning and 92.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.38 ms. Allocated memory is still 130.0 MB. Free memory was 92.3 MB in the beginning and 91.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 380.27 ms. Allocated memory is still 130.0 MB. Free memory was 91.3 MB in the beginning and 75.8 MB in the end (delta: 15.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7603.36 ms. Allocated memory was 130.0 MB in the beginning and 188.7 MB in the end (delta: 58.7 MB). Free memory was 75.8 MB in the beginning and 116.6 MB in the end (delta: -40.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.31 ms. Allocated memory is still 188.7 MB. Free memory is still 116.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + length2 and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * to and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 46 SDtfs, 62 SDslu, 66 SDs, 0 SdLazy, 86 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital162 mio100 ax111 hnf100 lsp83 ukn79 mio100 lsp55 div100 bol100 ite100 ukn100 eq183 hnf89 smp98 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 53ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...