./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.25-906a4fb [2020-10-19 20:25:13,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:25:13,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:25:13,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:25:13,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:25:13,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:25:13,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:25:13,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:25:13,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:25:13,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:25:13,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:25:13,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:25:13,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:25:13,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:25:13,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:25:13,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:25:13,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:25:13,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:25:13,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:25:13,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:25:13,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:25:13,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:25:13,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:25:13,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:25:13,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:25:13,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:25:13,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:25:13,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:25:13,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:25:13,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:25:13,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:25:13,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:25:13,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:25:13,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:25:13,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:25:13,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:25:13,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:25:13,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:25:13,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:25:13,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:25:13,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:25:13,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:25:14,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:25:14,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:25:14,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:25:14,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:25:14,033 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:25:14,033 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:25:14,033 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:25:14,033 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:25:14,034 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:25:14,034 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:25:14,034 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:25:14,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:25:14,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:25:14,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:25:14,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:25:14,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:25:14,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:25:14,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:25:14,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:25:14,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:25:14,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:25:14,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:25:14,037 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:25:14,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:25:14,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:25:14,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:25:14,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:25:14,039 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:25:14,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:25:14,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:25:14,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:25:14,040 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:25:14,042 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:25:14,042 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2020-10-19 20:25:14,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:25:14,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:25:14,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:25:14,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:25:14,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:25:14,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-19 20:25:14,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a9151e7/289d9c114a2f4e4c832dd8d037ac955a/FLAG301820e4d [2020-10-19 20:25:14,903 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:25:14,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-19 20:25:14,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a9151e7/289d9c114a2f4e4c832dd8d037ac955a/FLAG301820e4d [2020-10-19 20:25:15,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a9151e7/289d9c114a2f4e4c832dd8d037ac955a [2020-10-19 20:25:15,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:25:15,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:25:15,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:25:15,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:25:15,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:25:15,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b3f46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15, skipping insertion in model container [2020-10-19 20:25:15,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:25:15,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:25:15,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:25:15,782 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:25:15,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:25:15,925 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:25:15,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15 WrapperNode [2020-10-19 20:25:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:25:15,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:25:15,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:25:15,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:25:15,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:25:15,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:25:15,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:25:15,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:25:15,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:15,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:16,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:16,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:16,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... [2020-10-19 20:25:16,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:25:16,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:25:16,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:25:16,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:25:16,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 20:25:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 20:25:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:25:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 20:25:16,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:25:16,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:25:16,467 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:25:16,468 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 20:25:16,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:16 BoogieIcfgContainer [2020-10-19 20:25:16,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:25:16,471 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:25:16,471 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:25:16,475 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:25:16,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:16,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:25:15" (1/3) ... [2020-10-19 20:25:16,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b4aacb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:25:16, skipping insertion in model container [2020-10-19 20:25:16,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:16,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:25:15" (2/3) ... [2020-10-19 20:25:16,479 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b4aacb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:25:16, skipping insertion in model container [2020-10-19 20:25:16,479 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:25:16,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:16" (3/3) ... [2020-10-19 20:25:16,481 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2020-10-19 20:25:16,532 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:25:16,532 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:25:16,532 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:25:16,532 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:25:16,533 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:25:16,533 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:25:16,533 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:25:16,533 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:25:16,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-19 20:25:16,574 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 20:25:16,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:16,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:16,581 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 20:25:16,581 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 20:25:16,581 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:25:16,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-19 20:25:16,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 20:25:16,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:16,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:16,584 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 20:25:16,584 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 20:25:16,591 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L516true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 7#L516-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 18#L518true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 4#L519-3true [2020-10-19 20:25:16,592 INFO L796 eck$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 [2020-10-19 20:25:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-19 20:25:16,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:16,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151690823] [2020-10-19 20:25:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-10-19 20:25:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:16,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698743836] [2020-10-19 20:25:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,802 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:16,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-10-19 20:25:16,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:16,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625385087] [2020-10-19 20:25:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:16,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:16,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:17,059 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-19 20:25:17,122 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:17,123 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:17,123 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:17,123 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:17,123 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:17,123 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:17,124 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:17,124 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2020-10-19 20:25:17,124 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:17,124 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:17,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,422 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-19 20:25:17,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:17,804 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:17,810 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:17,821 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:17,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:17,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:17,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:17,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:17,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:17,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:17,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,832 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:17,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:17,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:17,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:17,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:17,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:17,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:17,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:17,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,876 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:17,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:17,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:17,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:17,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:17,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:17,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:17,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:17,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:17,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:17,950 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:17,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:17,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:17,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:17,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:17,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:17,954 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:17,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:17,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:17,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:17,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:17,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:17,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:17,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:17,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:17,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:18,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:18,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:18,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:18,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:18,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:18,027 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:18,027 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:18,035 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:18,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:18,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:18,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:18,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:18,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:18,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:18,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:18,094 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:18,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:18,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:18,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:18,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:18,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:18,151 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:18,151 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:18,169 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:18,267 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-19 20:25:18,267 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:18,282 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:18,291 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 20:25:18,291 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:18,292 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 [] [2020-10-19 20:25:18,343 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 20:25:18,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:18,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:18,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:25:18,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:18,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 20:25:18,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-19 20:25:18,545 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2020-10-19 20:25:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-10-19 20:25:18,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 20:25:18,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:18,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-19 20:25:18,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:18,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-19 20:25:18,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:18,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-10-19 20:25:18,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:25:18,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-10-19 20:25:18,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 20:25:18,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 20:25:18,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-10-19 20:25:18,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:18,578 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 20:25:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-10-19 20:25:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-19 20:25:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 20:25:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-10-19 20:25:18,612 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 20:25:18,612 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 20:25:18,613 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:25:18,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-10-19 20:25:18,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:25:18,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:18,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:18,618 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:18,618 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 20:25:18,622 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 138#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 127#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 128#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 137#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 129#L519-3 assume !(main_~i~0 < main_~length~0); 130#L519-4 main_~j~0 := 0; 136#L526-3 [2020-10-19 20:25:18,622 INFO L796 eck$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 [2020-10-19 20:25:18,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-10-19 20:25:18,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:18,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511122954] [2020-10-19 20:25:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:18,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511122954] [2020-10-19 20:25:18,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:25:18,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 20:25:18,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028267308] [2020-10-19 20:25:18,706 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:25:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-10-19 20:25:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:18,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869137922] [2020-10-19 20:25:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,719 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,722 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:18,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:25:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 20:25:18,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 20:25:18,763 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-19 20:25:18,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:25:18,801 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-10-19 20:25:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 20:25:18,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-10-19 20:25:18,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:25:18,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-10-19 20:25:18,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-19 20:25:18,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 20:25:18,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-10-19 20:25:18,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:18,805 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-19 20:25:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-10-19 20:25:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-19 20:25:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 20:25:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-19 20:25:18,809 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 20:25:18,809 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 20:25:18,809 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:25:18,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-19 20:25:18,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 20:25:18,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:18,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:18,811 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:18,812 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 20:25:18,812 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 [2020-10-19 20:25:18,812 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 [2020-10-19 20:25:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-10-19 20:25:18,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:18,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974825071] [2020-10-19 20:25:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,879 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-10-19 20:25:18,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:18,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593781885] [2020-10-19 20:25:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-10-19 20:25:18,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:18,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191377215] [2020-10-19 20:25:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:18,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:18,957 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:19,141 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-19 20:25:19,202 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:19,202 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:19,202 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:19,202 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:19,203 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:19,203 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,203 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:19,203 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:19,203 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2020-10-19 20:25:19,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:19,204 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:19,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:19,684 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:19,685 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:19,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,690 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:19,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:19,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,693 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,734 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:19,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:19,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:19,747 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,789 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:19,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:19,805 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:19,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:19,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:19,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,863 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:19,863 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:19,869 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:19,927 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:19,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:19,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:19,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:19,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:19,934 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:19,934 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:19,945 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:20,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:20,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:20,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:20,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:20,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:20,017 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:20,018 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:20,024 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:20,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:20,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:20,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:20,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:20,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:20,101 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:20,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:20,111 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:20,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:20,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:20,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:20,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:20,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:20,179 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:20,179 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:20,192 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:20,369 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-10-19 20:25:20,369 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:20,375 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:25:20,377 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 20:25:20,378 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:20,378 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-19 20:25:20,418 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 20:25:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:20,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:20,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:20,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:25:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:20,463 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 20:25:20,463 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 20:25:20,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 20 states and 26 transitions. Complement of second has 4 states. [2020-10-19 20:25:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-10-19 20:25:20,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-10-19 20:25:20,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:20,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-10-19 20:25:20,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:20,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-19 20:25:20,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:20,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-10-19 20:25:20,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:20,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-10-19 20:25:20,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 20:25:20,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 20:25:20,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-19 20:25:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:25:20,484 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-19 20:25:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-19 20:25:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-19 20:25:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 20:25:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-10-19 20:25:20,487 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-19 20:25:20,487 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-19 20:25:20,487 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:25:20,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-10-19 20:25:20,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:20,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:20,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:20,489 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:20,489 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:20,489 INFO L794 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 293#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; 283#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 284#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; 291#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 279#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 280#L521 assume !(main_~val~0 < 0); 294#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 296#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 281#L519-3 assume !(main_~i~0 < main_~length~0); 282#L519-4 main_~j~0 := 0; 290#L526-3 assume !!(main_~j~0 < main_~length~0); 286#L527-3 [2020-10-19 20:25:20,489 INFO L796 eck$LassoCheckResult]: Loop: 286#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 285#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~post9;havoc main_#t~mem8; 286#L527-3 [2020-10-19 20:25:20,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-10-19 20:25:20,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:20,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464322892] [2020-10-19 20:25:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,514 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-10-19 20:25:20,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:20,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694108401] [2020-10-19 20:25:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,526 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:20,526 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-10-19 20:25:20,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:20,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337732074] [2020-10-19 20:25:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:20,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:20,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:20,712 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-19 20:25:20,771 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:20,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:20,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:20,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:20,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:20,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:20,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:20,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:20,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration4_Lasso [2020-10-19 20:25:20,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:20,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:20,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:20,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:21,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:21,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:21,296 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:21,297 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:21,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:21,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,331 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:21,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:21,338 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:21,383 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:21,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:21,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:21,389 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:21,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,430 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:21,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:21,434 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:21,470 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:21,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:21,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:21,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:21,475 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:21,503 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:21,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,506 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:21,506 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:21,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:21,533 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:21,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:21,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:21,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:21,537 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:25:21,561 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,564 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:21,564 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:21,568 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:25:21,591 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:21,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:21,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:21,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:21,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:21,596 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:21,596 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:21,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:21,630 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-19 20:25:21,630 INFO L444 ModelExtractionUtils]: 2 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:25:21,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:25:21,641 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 20:25:21,641 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:21,641 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 (* ULTIMATE.start_main_~i~0 4) (- 4)))_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1 Supporting invariants [] [2020-10-19 20:25:21,682 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 20:25:21,685 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 20:25:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:21,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:25:21,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:21,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 20:25:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:21,815 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-19 20:25:21,815 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-10-19 20:25:21,930 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 39 states and 51 transitions. Complement of second has 11 states. [2020-10-19 20:25:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-10-19 20:25:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 20:25:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-10-19 20:25:21,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-19 20:25:21,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:21,932 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-19 20:25:21,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:21,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-19 20:25:21,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:21,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-10-19 20:25:21,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:21,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-10-19 20:25:21,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-19 20:25:21,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-19 20:25:21,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-10-19 20:25:21,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:25:21,936 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-10-19 20:25:21,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-10-19 20:25:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-19 20:25:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 20:25:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-19 20:25:21,940 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-19 20:25:21,940 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-19 20:25:21,940 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:25:21,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-10-19 20:25:21,941 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:21,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:21,941 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:21,941 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:21,942 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:21,942 INFO L794 eck$LassoCheckResult]: Stem: 457#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 455#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; 442#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 443#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; 449#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 437#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 438#L521 assume !(main_~val~0 < 0); 458#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 459#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 460#L519-3 assume !(main_~i~0 < main_~length~0); 461#L519-4 main_~j~0 := 0; 454#L526-3 assume !!(main_~j~0 < main_~length~0); 447#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 463#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 452#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 453#L526-3 assume !!(main_~j~0 < main_~length~0); 445#L527-3 [2020-10-19 20:25:21,942 INFO L796 eck$LassoCheckResult]: Loop: 445#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 444#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~post9;havoc main_#t~mem8; 445#L527-3 [2020-10-19 20:25:21,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:21,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-10-19 20:25:21,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:21,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755613151] [2020-10-19 20:25:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:21,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755613151] [2020-10-19 20:25:21,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656305753] [2020-10-19 20:25:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:25:22,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 20:25:22,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 20:25:22,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 20:25:22,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:22,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:25:22,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-19 20:25:22,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029179340] [2020-10-19 20:25:22,082 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:25:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-10-19 20:25:22,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870439650] [2020-10-19 20:25:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,088 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:22,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:25:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 20:25:22,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-19 20:25:22,116 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-10-19 20:25:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:25:22,249 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-10-19 20:25:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 20:25:22,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-10-19 20:25:22,252 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-19 20:25:22,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-10-19 20:25:22,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-19 20:25:22,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-19 20:25:22,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-19 20:25:22,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:25:22,253 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 20:25:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-19 20:25:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-19 20:25:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 20:25:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-19 20:25:22,257 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 20:25:22,257 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 20:25:22,257 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 20:25:22,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-19 20:25:22,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:22,258 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:22,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:22,260 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:22,261 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:22,261 INFO L794 eck$LassoCheckResult]: Stem: 599#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 597#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 581#L516 assume main_~length~0 < 1 || main_~length~0 >= 536870911;main_~length~0 := 1; 582#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 584#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 585#L521 assume !(main_~val~0 < 0); 613#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 602#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 603#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 607#L521 assume !(main_~val~0 < 0); 610#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 606#L519-3 assume !(main_~i~0 < main_~length~0); 593#L519-4 main_~j~0 := 0; 594#L526-3 assume !!(main_~j~0 < main_~length~0); 589#L527-3 [2020-10-19 20:25:22,261 INFO L796 eck$LassoCheckResult]: Loop: 589#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 588#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~post9;havoc main_#t~mem8; 589#L527-3 [2020-10-19 20:25:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-10-19 20:25:22,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867655312] [2020-10-19 20:25:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:22,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867655312] [2020-10-19 20:25:22,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136424848] [2020-10-19 20:25:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:25:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:22,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:25:22,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:22,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 20:25:22,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-19 20:25:22,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145443515] [2020-10-19 20:25:22,404 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:25:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-10-19 20:25:22,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361782682] [2020-10-19 20:25:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,414 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:22,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:25:22,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 20:25:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 20:25:22,441 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-10-19 20:25:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:25:22,466 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-10-19 20:25:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 20:25:22,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-10-19 20:25:22,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:22,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-10-19 20:25:22,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 20:25:22,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 20:25:22,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-10-19 20:25:22,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:25:22,469 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 20:25:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-10-19 20:25:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 20:25:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 20:25:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-10-19 20:25:22,471 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 20:25:22,472 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 20:25:22,472 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 20:25:22,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-10-19 20:25:22,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:22,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:22,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:22,473 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:22,473 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:22,474 INFO L794 eck$LassoCheckResult]: Stem: 717#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 715#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; 700#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 701#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; 713#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 702#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 703#L521 assume !(main_~val~0 < 0); 716#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 718#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 704#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 705#L521 assume !(main_~val~0 < 0); 721#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 720#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 719#L519-3 assume !(main_~i~0 < main_~length~0); 711#L519-4 main_~j~0 := 0; 712#L526-3 assume !!(main_~j~0 < main_~length~0); 707#L527-3 [2020-10-19 20:25:22,474 INFO L796 eck$LassoCheckResult]: Loop: 707#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 706#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~post9;havoc main_#t~mem8; 707#L527-3 [2020-10-19 20:25:22,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-10-19 20:25:22,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643553450] [2020-10-19 20:25:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,493 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-10-19 20:25:22,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325544656] [2020-10-19 20:25:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,506 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:22,507 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-10-19 20:25:22,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:22,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642014304] [2020-10-19 20:25:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:22,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:22,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:22,805 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-19 20:25:22,872 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:22,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:22,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:22,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:22,873 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:22,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:22,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:22,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:22,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration7_Lasso [2020-10-19 20:25:22,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:22,874 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:22,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:22,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:23,267 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:23,267 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:25:23,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:23,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,275 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:23,275 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:23,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-19 20:25:23,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:23,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:23,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:23,311 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:23,334 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,338 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,338 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,367 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,367 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,371 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:23,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:23,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:23,398 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:23,422 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:23,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,425 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:23,425 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:23,426 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,450 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,452 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,453 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,457 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,487 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,490 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,497 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,519 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,526 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,573 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,573 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,577 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,599 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,603 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:23,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:23,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:23,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:23,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:23,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:23,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:23,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:23,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:23,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:23,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:23,660 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:25:23,660 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:23,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:25:23,663 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:25:23,663 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:23,664 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 [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:23,704 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 20:25:23,705 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 20:25:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:23,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:23,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:23,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 20:25:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:23,751 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 20:25:23,751 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-19 20:25:23,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 7 states. [2020-10-19 20:25:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 20:25:23,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-10-19 20:25:23,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:23,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-10-19 20:25:23,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:23,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-19 20:25:23,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:23,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-19 20:25:23,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:23,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-10-19 20:25:23,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 20:25:23,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 20:25:23,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-10-19 20:25:23,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:25:23,773 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-19 20:25:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-10-19 20:25:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-19 20:25:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 20:25:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-19 20:25:23,775 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-19 20:25:23,775 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-19 20:25:23,776 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 20:25:23,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-10-19 20:25:23,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 20:25:23,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:25:23,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:25:23,777 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:25:23,777 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 20:25:23,777 INFO L794 eck$LassoCheckResult]: Stem: 862#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 860#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; 843#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 844#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; 855#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 845#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 846#L521 assume !(main_~val~0 < 0); 861#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 866#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 847#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 848#L521 assume !(main_~val~0 < 0); 863#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 864#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 865#L519-3 assume !(main_~i~0 < main_~length~0); 853#L519-4 main_~j~0 := 0; 854#L526-3 assume !!(main_~j~0 < main_~length~0); 852#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 867#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 856#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 857#L526-3 assume !!(main_~j~0 < main_~length~0); 850#L527-3 [2020-10-19 20:25:23,777 INFO L796 eck$LassoCheckResult]: Loop: 850#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 849#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~post9;havoc main_#t~mem8; 850#L527-3 [2020-10-19 20:25:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-10-19 20:25:23,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:23,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761084106] [2020-10-19 20:25:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,816 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-10-19 20:25:23,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:23,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337258415] [2020-10-19 20:25:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-10-19 20:25:23,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:25:23,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567470720] [2020-10-19 20:25:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:25:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:25:23,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:25:23,853 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:25:24,123 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-19 20:25:24,195 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:25:24,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:25:24,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:25:24,196 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:25:24,196 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:25:24,196 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:25:24,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:25:24,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration8_Lasso [2020-10-19 20:25:24,197 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:25:24,197 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:25:24,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:25:24,615 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:25:24,616 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:24,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:24,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:24,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:24,625 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,650 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,651 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:24,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:24,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:24,653 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:24,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:24,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:24,686 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:25:24,708 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 Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:24,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:24,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:24,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:24,759 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,782 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,785 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:24,785 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:24,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,823 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 20:25:24,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 20:25:24,833 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:25:24,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:25:24,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:25:24,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:25:24,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:25:24,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:25:24,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:25:24,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:25:24,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:25:24,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:25:24,862 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:25:24,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:25:24,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:25:24,866 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:25:24,867 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))_4) = 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))_4 Supporting invariants [] [2020-10-19 20:25:24,897 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 20:25:24,899 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 20:25:24,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:24,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:24,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:24,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 20:25:24,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:24,952 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 20:25:24,952 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 20:25:24,973 INFO L75 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. [2020-10-19 20:25:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 20:25:24,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 20:25:24,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:24,977 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:25:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:25,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:25,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 20:25:25,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:25,030 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 [2020-10-19 20:25:25,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 20:25:25,046 INFO L75 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. [2020-10-19 20:25:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 20:25:25,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 20:25:25,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:25,047 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:25:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:25:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:25,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 20:25:25,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:25:25,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 20:25:25,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:25:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:25:25,097 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 [2020-10-19 20:25:25,097 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 20:25:25,113 INFO L75 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. [2020-10-19 20:25:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 20:25:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 20:25:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-19 20:25:25,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 20:25:25,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:25,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-10-19 20:25:25,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:25,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-10-19 20:25:25,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:25:25,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-19 20:25:25,117 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:25:25,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-19 20:25:25,117 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:25:25,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:25:25,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:25:25,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:25:25,118 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:25,118 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:25,118 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:25:25,118 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 20:25:25,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:25:25,118 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:25:25,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:25:25,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:25:25 BoogieIcfgContainer [2020-10-19 20:25:25,125 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:25:25,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:25:25,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:25:25,130 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:25:25,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:25:16" (3/4) ... [2020-10-19 20:25:25,134 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:25:25,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:25:25,136 INFO L168 Benchmark]: Toolchain (without parser) took 9902.28 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 950.6 MB in the beginning and 913.3 MB in the end (delta: 37.2 MB). Peak memory consumption was 337.6 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:25,137 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:25:25,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:25,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:25:25,138 INFO L168 Benchmark]: Boogie Preprocessor took 33.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:25,139 INFO L168 Benchmark]: RCFGBuilder took 453.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:25,140 INFO L168 Benchmark]: BuchiAutomizer took 8654.03 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 183.0 MB). Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 153.4 MB). Peak memory consumption was 336.4 MB. Max. memory is 11.5 GB. [2020-10-19 20:25:25,140 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 1.3 GB. Free memory is still 913.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:25:25,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 688.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 453.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8654.03 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 183.0 MB). Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 153.4 MB). Peak memory consumption was 336.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.50 ms. Allocated memory is still 1.3 GB. Free memory is still 913.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - 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 8 terminating modules (3 trivial, 4 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 -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr + i * 4 + -4] and consists of 8 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.6s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 7.4s. 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 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 135 SDtfs, 195 SDslu, 110 SDs, 0 SdLazy, 204 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital141 mio100 ax112 hnf97 lsp83 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq155 hnf90 smp86 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms 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...