./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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 e71cee6f8bfbdef490f31ccfbc80e5cb950e3b6d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:49,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:49,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:49,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:49,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:49,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:49,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:49,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:49,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:49,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:49,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:49,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:49,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:49,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:49,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:49,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:49,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:49,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:49,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:49,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:49,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:49,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:49,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:49,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:49,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:49,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:49,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:49,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:49,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:49,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:49,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:49,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:49,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:49,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:49,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:49,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:49,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:49,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:49,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:49,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:49,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:49,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:56:49,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:49,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:49,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:49,911 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:49,911 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:49,912 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:49,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:49,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:49,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:49,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:49,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:49,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:49,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:49,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:49,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:49,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:49,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:49,915 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:49,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:49,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:49,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:49,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:49,916 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:49,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:49,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:49,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:49,917 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:49,918 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:49,918 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_eb64782c-c355-41a9-9652-6a2dea018f73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e71cee6f8bfbdef490f31ccfbc80e5cb950e3b6d [2020-11-28 02:56:50,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:50,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:50,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:50,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:50,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:50,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/../../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2020-11-28 02:56:50,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/data/4ab311ced/5b0929015d594782a813064bf1e11683/FLAG9446b8040 [2020-11-28 02:56:50,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:50,750 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2020-11-28 02:56:50,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/data/4ab311ced/5b0929015d594782a813064bf1e11683/FLAG9446b8040 [2020-11-28 02:56:51,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/data/4ab311ced/5b0929015d594782a813064bf1e11683 [2020-11-28 02:56:51,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:51,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:51,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:51,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:51,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336f673b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:51,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:51,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,374 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:51,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,404 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:51,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51 WrapperNode [2020-11-28 02:56:51,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:51,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:51,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:51,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:51,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:51,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:51,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:51,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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 [2020-11-28 02:56:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:51,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:51,774 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:56:51,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51 BoogieIcfgContainer [2020-11-28 02:56:51,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:51,777 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:51,777 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:51,780 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:51,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:51,781 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:51" (1/3) ... [2020-11-28 02:56:51,783 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce52c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,783 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:51,783 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (2/3) ... [2020-11-28 02:56:51,783 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce52c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,784 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:51,784 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51" (3/3) ... [2020-11-28 02:56:51,785 INFO L373 chiAutomizerObserver]: Analyzing ICFG array_assert_loop_dep.i [2020-11-28 02:56:51,829 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:51,829 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:51,829 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:51,830 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:51,830 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:51,830 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:51,830 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:51,830 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:51,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-28 02:56:51,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-28 02:56:51,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:51,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:51,866 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:56:51,866 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:51,866 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:51,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-28 02:56:51,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-28 02:56:51,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:51,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:51,869 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 02:56:51,869 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:56:51,875 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 9#L-1true havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 3#L18-3true [2020-11-28 02:56:51,883 INFO L796 eck$LassoCheckResult]: Loop: 3#L18-3true assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 4#L18-2true main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 3#L18-3true [2020-11-28 02:56:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-11-28 02:56:51,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:51,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416713285] [2020-11-28 02:56:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,077 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2020-11-28 02:56:52,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557424507] [2020-11-28 02:56:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,102 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,108 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2020-11-28 02:56:52,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195620071] [2020-11-28 02:56:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:52,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:52,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:52,528 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-11-28 02:56:52,648 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:52,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:52,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:52,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:52,650 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:52,650 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:52,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:52,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:52,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: array_assert_loop_dep.i_Iteration1_Lasso [2020-11-28 02:56:52,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:52,651 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:52,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:52,884 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-11-28 02:56:53,185 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:53,190 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,206 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 [2020-11-28 02:56:53,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:53,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:53,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:53,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:53,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:53,263 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 [2020-11-28 02:56:53,265 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,305 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 [2020-11-28 02:56:53,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,314 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,314 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,322 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,371 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 [2020-11-28 02:56:53,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:53,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:53,375 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 [2020-11-28 02:56:53,377 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,412 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 [2020-11-28 02:56:53,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:53,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:53,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:53,418 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,450 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 [2020-11-28 02:56:53,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,460 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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 [2020-11-28 02:56:53,491 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 [2020-11-28 02:56:53,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,497 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,502 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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 [2020-11-28 02:56:53,536 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 [2020-11-28 02:56:53,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,542 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,542 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,590 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 [2020-11-28 02:56:53,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,596 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,596 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,602 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:53,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:53,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:53,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,654 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,696 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 [2020-11-28 02:56:53,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:53,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,743 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,743 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,788 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 [2020-11-28 02:56:53,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,797 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,797 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 [2020-11-28 02:56:53,807 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:53,902 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-28 02:56:53,902 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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) [2020-11-28 02:56:53,931 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,934 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:53,934 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:53,935 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 199999 Supporting invariants [] [2020-11-28 02:56:54,016 INFO L297 tatePredicateManager]: 7 out of 7 supporting invariants were superfluous and have been removed [2020-11-28 02:56:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:56:54,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:54,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,208 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 [2020-11-28 02:56:54,211 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 3 states. [2020-11-28 02:56:54,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 3 states. Result 33 states and 47 transitions. Complement of second has 8 states. [2020-11-28 02:56:54,267 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 [2020-11-28 02:56:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:56:54,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-11-28 02:56:54,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 02:56:54,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:54,272 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 02:56:54,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:54,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-28 02:56:54,273 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:54,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2020-11-28 02:56:54,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:54,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2020-11-28 02:56:54,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 02:56:54,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 02:56:54,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2020-11-28 02:56:54,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:54,289 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-28 02:56:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2020-11-28 02:56:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 02:56:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 02:56:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-11-28 02:56:54,311 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-28 02:56:54,311 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-28 02:56:54,312 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:56:54,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2020-11-28 02:56:54,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:54,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:54,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:54,313 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:54,313 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:54,313 INFO L794 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 125#L-1 havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 118#L18-3 assume !(main_~i~0 < 100000); 119#L18-4 main_~i~0 := 0; 122#L22-3 [2020-11-28 02:56:54,313 INFO L796 eck$LassoCheckResult]: Loop: 122#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 123#L13 assume !(0 == __VERIFIER_assert_~cond); 126#L13-3 havoc main_#t~mem5; 127#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 124#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 122#L22-3 [2020-11-28 02:56:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2020-11-28 02:56:54,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017501667] [2020-11-28 02:56:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017501667] [2020-11-28 02:56:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511888809] [2020-11-28 02:56:54,384 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:56:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash 51965533, now seen corresponding path program 1 times [2020-11-28 02:56:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47278856] [2020-11-28 02:56:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:54,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:54,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:54,428 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:54,668 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-11-28 02:56:54,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:54,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:54,674 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 02:56:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:54,711 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-28 02:56:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:54,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2020-11-28 02:56:54,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:54,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 17 states and 19 transitions. [2020-11-28 02:56:54,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 02:56:54,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 02:56:54,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2020-11-28 02:56:54,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:54,714 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-28 02:56:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2020-11-28 02:56:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-28 02:56:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 02:56:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-28 02:56:54,716 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 02:56:54,716 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 02:56:54,717 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:56:54,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2020-11-28 02:56:54,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:54,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:54,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:54,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:54,718 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:54,719 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 159#L-1 havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 160#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 161#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 162#L18-3 assume !(main_~i~0 < 100000); 163#L18-4 main_~i~0 := 0; 169#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 173#L13 assume !(0 == __VERIFIER_assert_~cond); 172#L13-3 havoc main_#t~mem5; 170#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 171#L22-2 [2020-11-28 02:56:54,720 INFO L796 eck$LassoCheckResult]: Loop: 171#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 168#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 167#L13 assume !(0 == __VERIFIER_assert_~cond); 164#L13-3 havoc main_#t~mem5; 165#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 171#L22-2 [2020-11-28 02:56:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1436013086, now seen corresponding path program 1 times [2020-11-28 02:56:54,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151837370] [2020-11-28 02:56:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151837370] [2020-11-28 02:56:54,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147294901] [2020-11-28 02:56:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:56:54,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:54,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:56:54,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769074706] [2020-11-28 02:56:54,875 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:56:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash 72787423, now seen corresponding path program 2 times [2020-11-28 02:56:54,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390805329] [2020-11-28 02:56:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:54,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:54,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:54,902 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:55,096 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-11-28 02:56:55,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:55,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:55,099 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 5 states. [2020-11-28 02:56:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,155 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 02:56:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:55,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 26 transitions. [2020-11-28 02:56:55,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:55,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 26 transitions. [2020-11-28 02:56:55,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2020-11-28 02:56:55,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-11-28 02:56:55,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 26 transitions. [2020-11-28 02:56:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:55,161 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-11-28 02:56:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 26 transitions. [2020-11-28 02:56:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-11-28 02:56:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 02:56:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-28 02:56:55,164 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 02:56:55,164 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 02:56:55,164 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:56:55,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 24 transitions. [2020-11-28 02:56:55,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:55,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:55,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:55,166 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-28 02:56:55,166 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:55,166 INFO L794 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 233#L-1 havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 234#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 235#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 236#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 237#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 248#L18-3 assume !(main_~i~0 < 100000); 244#L18-4 main_~i~0 := 0; 242#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 243#L13 assume !(0 == __VERIFIER_assert_~cond); 254#L13-3 havoc main_#t~mem5; 253#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 246#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 247#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 241#L13 assume !(0 == __VERIFIER_assert_~cond); 238#L13-3 havoc main_#t~mem5; 239#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 245#L22-2 [2020-11-28 02:56:55,166 INFO L796 eck$LassoCheckResult]: Loop: 245#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 252#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 251#L13 assume !(0 == __VERIFIER_assert_~cond); 250#L13-3 havoc main_#t~mem5; 249#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 245#L22-2 [2020-11-28 02:56:55,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,169 INFO L82 PathProgramCache]: Analyzing trace with hash 464413856, now seen corresponding path program 1 times [2020-11-28 02:56:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208411195] [2020-11-28 02:56:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:56:55,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208411195] [2020-11-28 02:56:55,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696050732] [2020-11-28 02:56:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:56:55,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:55,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 02:56:55,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222924510] [2020-11-28 02:56:55,335 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:56:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 72787423, now seen corresponding path program 3 times [2020-11-28 02:56:55,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133849239] [2020-11-28 02:56:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:55,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:55,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:55,367 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:55,554 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-11-28 02:56:55,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:55,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:55,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:55,556 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. cyclomatic complexity: 4 Second operand 6 states. [2020-11-28 02:56:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,620 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-28 02:56:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:55,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 33 transitions. [2020-11-28 02:56:55,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:55,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 31 states and 33 transitions. [2020-11-28 02:56:55,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-11-28 02:56:55,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-28 02:56:55,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 33 transitions. [2020-11-28 02:56:55,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:55,624 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-28 02:56:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 33 transitions. [2020-11-28 02:56:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-28 02:56:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 02:56:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-28 02:56:55,632 INFO L714 BuchiCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-28 02:56:55,632 INFO L594 BuchiCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-28 02:56:55,632 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:56:55,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 31 transitions. [2020-11-28 02:56:55,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:55,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:55,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:55,635 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-11-28 02:56:55,637 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:55,637 INFO L794 eck$LassoCheckResult]: Stem: 351#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 347#L-1 havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 343#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 344#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 345#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 346#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 350#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 360#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 359#L18-3 assume !(main_~i~0 < 100000); 354#L18-4 main_~i~0 := 0; 355#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 371#L13 assume !(0 == __VERIFIER_assert_~cond); 370#L13-3 havoc main_#t~mem5; 369#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 358#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 353#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 352#L13 assume !(0 == __VERIFIER_assert_~cond); 348#L13-3 havoc main_#t~mem5; 349#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 365#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 368#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 367#L13 assume !(0 == __VERIFIER_assert_~cond); 366#L13-3 havoc main_#t~mem5; 356#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 357#L22-2 [2020-11-28 02:56:55,637 INFO L796 eck$LassoCheckResult]: Loop: 357#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 364#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 363#L13 assume !(0 == __VERIFIER_assert_~cond); 362#L13-3 havoc main_#t~mem5; 361#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 357#L22-2 [2020-11-28 02:56:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1190007842, now seen corresponding path program 2 times [2020-11-28 02:56:55,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427550328] [2020-11-28 02:56:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 02:56:55,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427550328] [2020-11-28 02:56:55,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476087645] [2020-11-28 02:56:55,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:55,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:56:55,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:55,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-28 02:56:55,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:55,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 02:56:55,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297384829] [2020-11-28 02:56:55,842 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:56:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash 72787423, now seen corresponding path program 4 times [2020-11-28 02:56:55,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035704236] [2020-11-28 02:56:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:55,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:55,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:55,873 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:56,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:56,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:56,021 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. cyclomatic complexity: 4 Second operand 7 states. [2020-11-28 02:56:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:56,087 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-11-28 02:56:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:56,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 40 transitions. [2020-11-28 02:56:56,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:56,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 38 states and 40 transitions. [2020-11-28 02:56:56,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-28 02:56:56,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-11-28 02:56:56,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 40 transitions. [2020-11-28 02:56:56,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:56,090 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-28 02:56:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 40 transitions. [2020-11-28 02:56:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-28 02:56:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:56:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-28 02:56:56,094 INFO L714 BuchiCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-28 02:56:56,094 INFO L594 BuchiCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-28 02:56:56,094 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 02:56:56,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 38 transitions. [2020-11-28 02:56:56,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 02:56:56,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:56,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:56,097 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2020-11-28 02:56:56,097 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:56,097 INFO L794 eck$LassoCheckResult]: Stem: 496#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(24); 489#L-1 havoc main_#res;havoc main_#t~post3, main_#t~mem5, main_#t~post4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;havoc main_~i~0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(400000);main_~i~0 := 0; 490#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 491#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 492#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 493#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 497#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 507#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 506#L18-3 assume !!(main_~i~0 < 100000);call write~int(10, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 505#L18-2 main_#t~post3 := main_~i~0;main_~i~0 := 1 + main_#t~post3;havoc main_#t~post3; 504#L18-3 assume !(main_~i~0 < 100000); 500#L18-4 main_~i~0 := 0; 501#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 524#L13 assume !(0 == __VERIFIER_assert_~cond); 523#L13-3 havoc main_#t~mem5; 522#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 503#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 499#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 498#L13 assume !(0 == __VERIFIER_assert_~cond); 494#L13-3 havoc main_#t~mem5; 495#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 502#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 521#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 520#L13 assume !(0 == __VERIFIER_assert_~cond); 519#L13-3 havoc main_#t~mem5; 518#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 517#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 516#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 515#L13 assume !(0 == __VERIFIER_assert_~cond); 514#L13-3 havoc main_#t~mem5; 513#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 509#L22-2 [2020-11-28 02:56:56,097 INFO L796 eck$LassoCheckResult]: Loop: 509#L22-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 512#L22-3 assume !!(main_~i~0 < 100000);call main_#t~mem5 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);__VERIFIER_assert_#in~cond := (if 10 == main_#t~mem5 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 511#L13 assume !(0 == __VERIFIER_assert_~cond); 510#L13-3 havoc main_#t~mem5; 508#L25 assume 15000 != 1 + main_~i~0;call write~int(20, main_~#a~0.base, main_~#a~0.offset + 4 * (1 + main_~i~0), 4); 509#L22-2 [2020-11-28 02:56:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,098 INFO L82 PathProgramCache]: Analyzing trace with hash -913629028, now seen corresponding path program 3 times [2020-11-28 02:56:56,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:56,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453790822] [2020-11-28 02:56:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-28 02:56:56,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453790822] [2020-11-28 02:56:56,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856169047] [2020-11-28 02:56:56,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb64782c-c355-41a9-9652-6a2dea018f73/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 [2020-11-28 02:56:56,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 02:56:56,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:56:56,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,297 INFO L384 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 16 treesize of output 12 [2020-11-28 02:56:56,298 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:56,301 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:56,301 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:56,301 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:12 [2020-11-28 02:56:56,341 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 02:56:56,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:56,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-11-28 02:56:56,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692534294] [2020-11-28 02:56:56,367 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:56:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash 72787423, now seen corresponding path program 5 times [2020-11-28 02:56:56,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:56,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079456330] [2020-11-28 02:56:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:56,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:56,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:56,379 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:56,569 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. cyclomatic complexity: 4 Second operand 5 states. [2020-11-28 02:56:56,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:56,618 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-28 02:56:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:56,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 19 transitions. [2020-11-28 02:56:56,619 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:56,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 0 states and 0 transitions. [2020-11-28 02:56:56,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:56:56,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:56:56,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:56:56,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:56,620 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,620 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,620 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,620 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 02:56:56,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:56,621 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:56,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:56:56,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:56 BoogieIcfgContainer [2020-11-28 02:56:56,626 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:56,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:56,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:56,627 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:56,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:51" (3/4) ... [2020-11-28 02:56:56,631 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:56,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:56,637 INFO L168 Benchmark]: Toolchain (without parser) took 5481.27 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 67.9 MB in the beginning and 103.0 MB in the end (delta: -35.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,644 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 83.9 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.00 ms. Allocated memory is still 100.7 MB. Free memory was 67.9 MB in the beginning and 78.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,646 INFO L168 Benchmark]: Boogie Preprocessor took 28.68 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 76.3 MB in the end (delta: 784.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,646 INFO L168 Benchmark]: RCFGBuilder took 309.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 63.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,649 INFO L168 Benchmark]: BuchiAutomizer took 4849.31 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.4 MB in the beginning and 103.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,652 INFO L168 Benchmark]: Witness Printer took 9.51 ms. Allocated memory is still 146.8 MB. Free memory is still 103.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 83.9 MB. Free memory was 65.1 MB in the beginning and 65.1 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.00 ms. Allocated memory is still 100.7 MB. Free memory was 67.9 MB in the beginning and 78.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 77.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.68 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 76.3 MB in the end (delta: 784.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 309.45 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 63.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4849.31 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 63.4 MB in the beginning and 103.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 9.51 ms. Allocated memory is still 146.8 MB. Free memory is still 103.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (5 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 199999 and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 4.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 36 states and ocurred in iteration 5. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 43 SDtfs, 59 SDslu, 48 SDs, 0 SdLazy, 131 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU5 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital153 mio100 ax100 hnf100 lsp94 ukn56 mio100 lsp41 div100 bol100 ite100 ukn100 eq152 hnf92 smp100 dnf100 smp100 tf100 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...