./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/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 3e28603c63113c1566dc2e06da17c63059f80486 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:15:22,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:15:22,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:15:22,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:15:22,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:15:22,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:15:22,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:15:22,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:15:22,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:15:22,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:15:22,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:15:22,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:15:22,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:15:22,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:15:22,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:15:22,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:15:22,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:15:22,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:15:22,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:15:22,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:15:22,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:15:22,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:15:22,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:15:22,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:15:22,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:15:22,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:15:22,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:15:22,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:15:22,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:15:22,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:15:22,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:15:22,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:15:22,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:15:22,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:15:22,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:15:22,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:15:22,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:15:22,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:15:22,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:15:22,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:15:22,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:15:22,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 00:15:22,873 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:15:22,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:15:22,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:15:22,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:15:22,875 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:15:22,875 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 00:15:22,876 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 00:15:22,876 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 00:15:22,876 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 00:15:22,876 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 00:15:22,876 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 00:15:22,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:15:22,877 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:15:22,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:15:22,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:15:22,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:15:22,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:15:22,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 00:15:22,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 00:15:22,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 00:15:22,879 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:15:22,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:15:22,879 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 00:15:22,879 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:15:22,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 00:15:22,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:15:22,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:15:22,880 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 00:15:22,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:15:22,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:15:22,881 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 00:15:22,881 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 00:15:22,882 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2019-11-20 00:15:23,023 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:15:23,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:15:23,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:15:23,038 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:15:23,038 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:15:23,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-20 00:15:23,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/data/239aed747/06e63ffa4db84402ab3c2164a55b01b1/FLAG8af45203e [2019-11-20 00:15:23,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:15:23,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2019-11-20 00:15:23,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/data/239aed747/06e63ffa4db84402ab3c2164a55b01b1/FLAG8af45203e [2019-11-20 00:15:23,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/data/239aed747/06e63ffa4db84402ab3c2164a55b01b1 [2019-11-20 00:15:23,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:15:23,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:15:23,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:15:23,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:15:23,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:15:23,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:23" (1/1) ... [2019-11-20 00:15:23,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208e1e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:23, skipping insertion in model container [2019-11-20 00:15:23,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:23" (1/1) ... [2019-11-20 00:15:23,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:15:23,945 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:15:24,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:15:24,266 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:15:24,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:15:24,358 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:15:24,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24 WrapperNode [2019-11-20 00:15:24,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:15:24,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:15:24,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:15:24,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:15:24,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:15:24,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:15:24,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:15:24,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:15:24,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... [2019-11-20 00:15:24,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:15:24,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:15:24,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:15:24,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:15:24,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 00:15:24,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 00:15:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:15:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 00:15:24,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:15:24,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:15:24,741 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:15:24,741 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 00:15:24,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:24 BoogieIcfgContainer [2019-11-20 00:15:24,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:15:24,743 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 00:15:24,743 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 00:15:24,745 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 00:15:24,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:15:24,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:15:23" (1/3) ... [2019-11-20 00:15:24,747 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b9b9ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:15:24, skipping insertion in model container [2019-11-20 00:15:24,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:15:24,747 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:24" (2/3) ... [2019-11-20 00:15:24,747 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b9b9ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:15:24, skipping insertion in model container [2019-11-20 00:15:24,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:15:24,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:24" (3/3) ... [2019-11-20 00:15:24,749 INFO L371 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2019-11-20 00:15:24,790 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 00:15:24,791 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 00:15:24,791 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 00:15:24,791 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:15:24,791 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:15:24,791 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 00:15:24,791 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:15:24,791 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 00:15:24,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-20 00:15:24,820 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-20 00:15:24,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:24,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:24,826 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 00:15:24,827 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:15:24,827 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 00:15:24,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-20 00:15:24,829 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-20 00:15:24,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:24,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:24,829 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 00:15:24,829 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:15:24,837 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L516true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 7#L516-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 18#L518true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 4#L519-3true [2019-11-20 00:15:24,837 INFO L796 eck$LassoCheckResult]: Loop: 4#L519-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 13#L521true assume main_~val~0 < 0;main_~val~0 := 0; 16#L521-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 20#L519-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4#L519-3true [2019-11-20 00:15:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-11-20 00:15:24,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:24,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131960163] [2019-11-20 00:15:24,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:24,958 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2019-11-20 00:15:24,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:24,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041450062] [2019-11-20 00:15:24,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:24,979 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2019-11-20 00:15:24,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:24,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704553573] [2019-11-20 00:15:24,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:25,015 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:25,221 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2019-11-20 00:15:25,279 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:15:25,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:15:25,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:15:25,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:15:25,280 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:15:25,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:25,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:15:25,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:15:25,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2019-11-20 00:15:25,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:15:25,282 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:15:25,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:25,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:15:25,857 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:25,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:25,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:25,885 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:25,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:25,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:25,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:25,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:25,888 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 [2019-11-20 00:15:25,892 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:25,911 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:25,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:25,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:25,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:25,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:25,924 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:25,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:25,933 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:25,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:25,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:25,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:25,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:25,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:25,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:25,964 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:25,972 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:25,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:25,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:25,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:25,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:25,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:26,009 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:26,009 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:26,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:15:26,200 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-11-20 00:15:26,201 INFO L444 ModelExtractionUtils]: 3 out of 22 variables were initially zero. Simplification set additionally 16 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:26,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:15:26,215 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 00:15:26,216 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:15:26,216 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-11-20 00:15:26,248 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 00:15:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:26,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:15:26,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:26,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:15:26,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:26,333 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:15:26,334 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-11-20 00:15:26,400 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2019-11-20 00:15:26,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:15:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-11-20 00:15:26,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 00:15:26,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:26,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-20 00:15:26,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:26,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-20 00:15:26,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:26,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2019-11-20 00:15:26,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:15:26,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2019-11-20 00:15:26,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 00:15:26,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 00:15:26,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-11-20 00:15:26,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:15:26,428 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-20 00:15:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-11-20 00:15:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-20 00:15:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 00:15:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2019-11-20 00:15:26,450 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-20 00:15:26,450 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-20 00:15:26,450 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 00:15:26,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2019-11-20 00:15:26,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:15:26,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:26,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:26,452 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:15:26,452 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:15:26,453 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 138#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 127#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 128#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 137#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 129#L519-3 assume !(main_~i~0 < main_~length~0); 130#L519-4 main_~j~0 := 0; 136#L526-3 [2019-11-20 00:15:26,453 INFO L796 eck$LassoCheckResult]: Loop: 136#L526-3 assume !!(main_~j~0 < main_~length~0); 135#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 133#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 134#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 136#L526-3 [2019-11-20 00:15:26,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2019-11-20 00:15:26,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:26,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335901323] [2019-11-20 00:15:26,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:26,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335901323] [2019-11-20 00:15:26,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:15:26,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:15:26,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553594622] [2019-11-20 00:15:26,550 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 00:15:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2019-11-20 00:15:26,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:26,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519314508] [2019-11-20 00:15:26,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,585 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:26,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:26,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:15:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:15:26,643 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-20 00:15:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:26,684 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-11-20 00:15:26,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:15:26,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2019-11-20 00:15:26,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:15:26,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2019-11-20 00:15:26,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 00:15:26,687 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 00:15:26,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2019-11-20 00:15:26,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:15:26,687 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-11-20 00:15:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2019-11-20 00:15:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-20 00:15:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 00:15:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-20 00:15:26,690 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-20 00:15:26,690 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-20 00:15:26,690 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 00:15:26,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-11-20 00:15:26,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:15:26,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:26,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:26,694 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:15:26,694 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:15:26,694 INFO L794 eck$LassoCheckResult]: Stem: 180#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 178#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 167#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 168#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 177#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 169#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 170#L521 assume !(main_~val~0 < 0); 179#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 181#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 171#L519-3 assume !(main_~i~0 < main_~length~0); 172#L519-4 main_~j~0 := 0; 176#L526-3 [2019-11-20 00:15:26,695 INFO L796 eck$LassoCheckResult]: Loop: 176#L526-3 assume !!(main_~j~0 < main_~length~0); 175#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 173#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 174#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 176#L526-3 [2019-11-20 00:15:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2019-11-20 00:15:26,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:26,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414653567] [2019-11-20 00:15:26,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,731 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2019-11-20 00:15:26,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:26,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581598943] [2019-11-20 00:15:26,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,753 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:26,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2019-11-20 00:15:26,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:26,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482322812] [2019-11-20 00:15:26,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:26,809 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:27,020 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-11-20 00:15:27,095 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:15:27,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:15:27,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:15:27,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:15:27,096 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:15:27,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:15:27,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:15:27,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2019-11-20 00:15:27,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:15:27,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:15:27,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:27,633 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:15:27,634 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:27,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:27,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:27,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:27,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:27,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:27,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:27,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:27,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:27,669 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:27,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:27,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:27,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:27,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:27,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:27,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:27,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,675 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:27,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:27,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:27,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:27,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:27,693 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:27,693 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:27,704 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:27,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:27,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:27,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:27,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:27,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:27,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:27,747 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:15:27,803 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-11-20 00:15:27,803 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:27,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:27,819 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 00:15:27,820 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:15:27,820 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2, ULTIMATE.start_main_~arr~0.offset, ULTIMATE.start_main_~j~0) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 - 1*ULTIMATE.start_main_~arr~0.offset - 4*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-20 00:15:27,837 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 00:15:27,839 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 00:15:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:27,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:15:27,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:27,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:15:27,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:27,896 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:15:27,897 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 00:15:27,937 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2019-11-20 00:15:27,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:15:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2019-11-20 00:15:27,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-20 00:15:27,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:27,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-20 00:15:27,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:27,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-20 00:15:27,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:27,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-20 00:15:27,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:27,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 26 transitions. [2019-11-20 00:15:27,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 00:15:27,942 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 00:15:27,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-11-20 00:15:27,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:15:27,942 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-20 00:15:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-11-20 00:15:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 00:15:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 00:15:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2019-11-20 00:15:27,945 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-20 00:15:27,945 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-20 00:15:27,945 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 00:15:27,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2019-11-20 00:15:27,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:27,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:27,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:27,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:15:27,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:15:27,946 INFO L794 eck$LassoCheckResult]: Stem: 299#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 297#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 287#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 288#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 295#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 283#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 284#L521 assume !(main_~val~0 < 0); 298#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 300#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 285#L519-3 assume !(main_~i~0 < main_~length~0); 286#L519-4 main_~j~0 := 0; 294#L526-3 assume !!(main_~j~0 < main_~length~0); 290#L527-3 [2019-11-20 00:15:27,947 INFO L796 eck$LassoCheckResult]: Loop: 290#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 289#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 290#L527-3 [2019-11-20 00:15:27,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:27,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2019-11-20 00:15:27,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:27,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001681271] [2019-11-20 00:15:27,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:27,989 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:27,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2019-11-20 00:15:27,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:27,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894263021] [2019-11-20 00:15:27,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:28,006 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2019-11-20 00:15:28,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:28,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572910560] [2019-11-20 00:15:28,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:28,064 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:28,271 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-11-20 00:15:28,341 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:15:28,341 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:15:28,341 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:15:28,341 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:15:28,341 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:15:28,341 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:15:28,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:15:28,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration4_Lasso [2019-11-20 00:15:28,342 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:15:28,342 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:15:28,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:28,875 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:15:28,875 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:28,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:28,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:28,894 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:28,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:28,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:28,917 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:28,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,938 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:28,938 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 [2019-11-20 00:15:28,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:28,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:28,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:28,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,965 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:28,965 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:28,968 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,973 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:28,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:28,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:28,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:28,983 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:28,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:28,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:28,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:28,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:28,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:28,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:29,008 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:29,052 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:29,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:29,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:29,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:29,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:29,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:29,059 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:29,065 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:29,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:29,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:29,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:29,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:29,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:29,086 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:29,086 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:29,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:29,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:29,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:29,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:29,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:29,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:29,112 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:29,112 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:29,119 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:15:29,127 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-20 00:15:29,127 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:29,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:15:29,133 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 00:15:29,133 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:15:29,133 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2 Supporting invariants [] [2019-11-20 00:15:29,143 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2019-11-20 00:15:29,145 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-20 00:15:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:29,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:15:29,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:29,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:15:29,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:29,209 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-20 00:15:29,210 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-20 00:15:29,258 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 8 states. [2019-11-20 00:15:29,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:15:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-20 00:15:29,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 2 letters. [2019-11-20 00:15:29,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:29,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 14 letters. Loop has 2 letters. [2019-11-20 00:15:29,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:29,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-20 00:15:29,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:29,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2019-11-20 00:15:29,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:29,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 22 states and 28 transitions. [2019-11-20 00:15:29,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 00:15:29,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 00:15:29,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2019-11-20 00:15:29,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:15:29,265 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-11-20 00:15:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2019-11-20 00:15:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-20 00:15:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 00:15:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-11-20 00:15:29,267 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-20 00:15:29,267 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-20 00:15:29,267 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 00:15:29,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2019-11-20 00:15:29,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:29,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:29,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:29,269 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:15:29,269 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:15:29,269 INFO L794 eck$LassoCheckResult]: Stem: 435#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 433#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 421#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 422#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 428#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 417#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 418#L521 assume !(main_~val~0 < 0); 434#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 436#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 419#L519-3 assume !(main_~i~0 < main_~length~0); 420#L519-4 main_~j~0 := 0; 427#L526-3 assume !!(main_~j~0 < main_~length~0); 426#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 437#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 429#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 430#L526-3 assume !!(main_~j~0 < main_~length~0); 424#L527-3 [2019-11-20 00:15:29,269 INFO L796 eck$LassoCheckResult]: Loop: 424#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 423#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 424#L527-3 [2019-11-20 00:15:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2019-11-20 00:15:29,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:29,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081501103] [2019-11-20 00:15:29,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:29,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081501103] [2019-11-20 00:15:29,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998891867] [2019-11-20 00:15:29,361 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:15:29,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 00:15:29,416 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:15:29,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:15:29,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:29,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:15:29,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2019-11-20 00:15:29,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575153808] [2019-11-20 00:15:29,488 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 00:15:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2019-11-20 00:15:29,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:29,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272681265] [2019-11-20 00:15:29,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,495 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:29,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:15:29,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 00:15:29,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-20 00:15:29,539 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 10 Second operand 14 states. [2019-11-20 00:15:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:15:29,851 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-11-20 00:15:29,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 00:15:29,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2019-11-20 00:15:29,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:29,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 28 states and 35 transitions. [2019-11-20 00:15:29,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 00:15:29,853 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 00:15:29,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2019-11-20 00:15:29,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:15:29,854 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-20 00:15:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2019-11-20 00:15:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-11-20 00:15:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 00:15:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-11-20 00:15:29,855 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-11-20 00:15:29,855 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-11-20 00:15:29,856 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 00:15:29,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2019-11-20 00:15:29,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:15:29,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:15:29,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:15:29,857 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:15:29,857 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:15:29,857 INFO L794 eck$LassoCheckResult]: Stem: 579#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 577#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 564#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 565#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 572#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 560#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 561#L521 assume !(main_~val~0 < 0); 584#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 583#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 562#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 563#L521 assume !(main_~val~0 < 0); 578#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 580#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 581#L519-3 assume !(main_~i~0 < main_~length~0); 570#L519-4 main_~j~0 := 0; 571#L526-3 assume !!(main_~j~0 < main_~length~0); 569#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 582#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 575#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 576#L526-3 assume !!(main_~j~0 < main_~length~0); 567#L527-3 [2019-11-20 00:15:29,857 INFO L796 eck$LassoCheckResult]: Loop: 567#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 566#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 567#L527-3 [2019-11-20 00:15:29,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,858 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2019-11-20 00:15:29,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:29,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210349827] [2019-11-20 00:15:29,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,881 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:29,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2019-11-20 00:15:29,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:29,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156511929] [2019-11-20 00:15:29,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,888 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2019-11-20 00:15:29,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:15:29,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448328667] [2019-11-20 00:15:29,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:15:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:15:29,922 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:15:30,186 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2019-11-20 00:15:30,236 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:15:30,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:15:30,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:15:30,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:15:30,236 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:15:30,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,236 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:15:30,236 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:15:30,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration6_Lasso [2019-11-20 00:15:30,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:15:30,237 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:15:30,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:15:30,599 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:15:30,599 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,603 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,605 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,605 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:30,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:30,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:30,607 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,613 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,616 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,616 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,619 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,626 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,626 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,629 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,634 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,638 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,638 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,642 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,651 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,655 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:15:30,676 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,679 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,679 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,691 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,692 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,696 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:15:30,696 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:15:30,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:15:30,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:15:30,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:15:30,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:15:30,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:15:30,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:15:30,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:15:30,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:15:30,714 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:15:30,716 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:15:30,716 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58de6931-d807-49f9-9a74-1723deadbedf/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:15:30,719 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:15:30,719 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:15:30,719 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:15:30,719 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] [2019-11-20 00:15:30,727 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-20 00:15:30,728 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-20 00:15:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:30,786 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:15:30,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-20 00:15:30,809 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-11-20 00:15:30,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:15:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-20 00:15:30,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-20 00:15:30,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:30,812 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:15:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:30,857 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:15:30,858 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-20 00:15:30,876 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-11-20 00:15:30,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:15:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-20 00:15:30,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-20 00:15:30,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:30,878 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 00:15:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:15:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:15:30,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:15:30,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:15:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:15:30,936 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:15:30,937 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-20 00:15:30,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2019-11-20 00:15:30,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 00:15:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:15:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-20 00:15:30,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-20 00:15:30,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:30,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2019-11-20 00:15:30,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:30,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2019-11-20 00:15:30,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:15:30,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-11-20 00:15:30,957 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:15:30,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-11-20 00:15:30,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 00:15:30,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 00:15:30,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 00:15:30,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:15:30,958 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:15:30,958 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:15:30,958 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:15:30,958 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 00:15:30,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:15:30,958 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:15:30,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 00:15:30,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:15:30 BoogieIcfgContainer [2019-11-20 00:15:30,963 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 00:15:30,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:15:30,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:15:30,963 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:15:30,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:24" (3/4) ... [2019-11-20 00:15:30,966 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:15:30,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:15:30,967 INFO L168 Benchmark]: Toolchain (without parser) took 7065.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -216.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:15:30,967 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:15:30,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:15:30,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:15:30,968 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:15:30,969 INFO L168 Benchmark]: RCFGBuilder took 321.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:15:30,970 INFO L168 Benchmark]: BuchiAutomizer took 6220.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -69.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:15:30,970 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:15:30,972 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 456.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6220.10 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -69.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[arr] + -1 * arr + -4 * j and consists of 4 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr] and consists of 5 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 5.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 109 SDtfs, 223 SDslu, 84 SDs, 0 SdLazy, 192 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital133 mio100 ax113 hnf98 lsp82 ukn79 mio100 lsp57 div100 bol100 ite100 ukn100 eq160 hnf90 smp93 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...