./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array19_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/termination-15/array19_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 1ea3ac03f270ffde8f9fa6679f30ddad451a463f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:49:19,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:49:19,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:49:19,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:49:19,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:49:19,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:49:19,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:49:19,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:49:19,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:49:19,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:49:20,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:49:20,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:49:20,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:49:20,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:49:20,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:49:20,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:49:20,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:49:20,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:49:20,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:49:20,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:49:20,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:49:20,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:49:20,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:49:20,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:49:20,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:49:20,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:49:20,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:49:20,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:49:20,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:49:20,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:49:20,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:49:20,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:49:20,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:49:20,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:49:20,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:49:20,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:49:20,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:49:20,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:49:20,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:49:20,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:49:20,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:49:20,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:49:20,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:49:20,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:49:20,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:49:20,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:49:20,071 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:49:20,072 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:49:20,072 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:49:20,072 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:49:20,072 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:49:20,072 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:49:20,073 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:49:20,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:49:20,073 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:49:20,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:49:20,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:49:20,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:49:20,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:49:20,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:49:20,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:49:20,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:49:20,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:49:20,076 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:49:20,076 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ea3ac03f270ffde8f9fa6679f30ddad451a463f [2021-07-06 18:49:20,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:49:20,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:49:20,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:49:20,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:49:20,358 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:49:20,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array19_alloca.i [2021-07-06 18:49:20,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb5e1e9/5c18fc59ec4c4264bed6fc891207543c/FLAG9af3e31c0 [2021-07-06 18:49:20,790 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:49:20,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array19_alloca.i [2021-07-06 18:49:20,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb5e1e9/5c18fc59ec4c4264bed6fc891207543c/FLAG9af3e31c0 [2021-07-06 18:49:20,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2deb5e1e9/5c18fc59ec4c4264bed6fc891207543c [2021-07-06 18:49:20,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:49:20,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:49:20,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:49:20,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:49:20,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:49:20,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:49:20" (1/1) ... [2021-07-06 18:49:20,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a302cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:20, skipping insertion in model container [2021-07-06 18:49:20,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:49:20" (1/1) ... [2021-07-06 18:49:20,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:49:20,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:49:21,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:49:21,069 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:49:21,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:49:21,162 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:49:21,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21 WrapperNode [2021-07-06 18:49:21,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:49:21,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:49:21,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:49:21,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:49:21,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:49:21,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:49:21,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:49:21,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:49:21,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:49:21,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:49:21,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:49:21,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:49:21,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (1/1) ... [2021-07-06 18:49:21,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:21,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:21,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 18:49:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 18:49:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 18:49:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 18:49:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 18:49:21,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:49:21,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:49:21,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:49:21,510 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-07-06 18:49:21,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:49:21 BoogieIcfgContainer [2021-07-06 18:49:21,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:49:21,538 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:49:21,539 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:49:21,540 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:49:21,541 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:49:21,541 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:49:20" (1/3) ... [2021-07-06 18:49:21,542 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e2c50b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:49:21, skipping insertion in model container [2021-07-06 18:49:21,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:49:21,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:49:21" (2/3) ... [2021-07-06 18:49:21,542 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e2c50b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:49:21, skipping insertion in model container [2021-07-06 18:49:21,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:49:21,543 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:49:21" (3/3) ... [2021-07-06 18:49:21,543 INFO L389 chiAutomizerObserver]: Analyzing ICFG array19_alloca.i [2021-07-06 18:49:21,570 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:49:21,570 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:49:21,571 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:49:21,571 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:49:21,571 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:49:21,571 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:49:21,571 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:49:21,571 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:49:21,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:21,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-07-06 18:49:21,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:49:21,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:49:21,594 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-07-06 18:49:21,594 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:49:21,594 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:49:21,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:21,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2021-07-06 18:49:21,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:49:21,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:49:21,596 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-07-06 18:49:21,596 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:49:21,600 INFO L791 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 14#L367true assume !(main_~length~0 < 1); 5#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 11#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 15#L370-3true [2021-07-06 18:49:21,600 INFO L793 eck$LassoCheckResult]: Loop: 15#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 13#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 15#L370-3true [2021-07-06 18:49:21,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:21,604 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-07-06 18:49:21,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:21,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005224781] [2021-07-06 18:49:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:21,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,676 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,692 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2021-07-06 18:49:21,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:21,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856962935] [2021-07-06 18:49:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:21,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,727 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,735 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,740 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2021-07-06 18:49:21,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792088764] [2021-07-06 18:49:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:21,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,766 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:21,794 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:21,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:21,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:21,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-07-06 18:49:21,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:21,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-07-06 18:49:22,005 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:49:22,005 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:49:22,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:49:22,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:49:22,006 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:49:22,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:49:22,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:49:22,007 INFO L133 ssoRankerPreferences]: Filename of dumped script: array19_alloca.i_Iteration1_Lasso [2021-07-06 18:49:22,007 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:49:22,007 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:49:22,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:49:22,311 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:49:22,314 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:49:22,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:22,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:22,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-07-06 18:49:22,323 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:49:22,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:49:22,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:49:22,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:49:22,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:49:22,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:49:22,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:49:22,333 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:49:22,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:49:22,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-07-06 18:49:22,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:22,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:22,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-07-06 18:49:22,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:49:22,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:49:22,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:49:22,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:49:22,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:49:22,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:49:22,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:49:22,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:49:22,399 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:49:22,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-07-06 18:49:22,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:22,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:22,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-07-06 18:49:22,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:49:22,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:49:22,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:49:22,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:49:22,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:49:22,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:49:22,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:49:22,456 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:49:22,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-07-06 18:49:22,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:22,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:22,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:49:22,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:49:22,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:49:22,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:49:22,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:49:22,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-07-06 18:49:22,496 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:49:22,496 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:49:22,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:49:22,526 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-07-06 18:49:22,527 INFO L444 ModelExtractionUtils]: 9 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-07-06 18:49:22,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:49:22,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:49:22,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:49:22,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-07-06 18:49:22,531 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:49:22,565 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-07-06 18:49:22,565 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:49:22,566 INFO L515 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 [] [2021-07-06 18:49:22,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-07-06 18:49:22,598 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-07-06 18:49:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:49:22,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:49:22,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:49:22,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:49:22,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:49:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:49:22,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:49:22,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:49:22,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:49:22,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:49:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:49:22,664 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 [2021-07-06 18:49:22,665 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-07-06 18:49:22,722 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 30 states and 40 transitions. Complement of second has 7 states. [2021-07-06 18:49:22,723 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 [2021-07-06 18:49:22,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-07-06 18:49:22,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2021-07-06 18:49:22,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:49:22,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2021-07-06 18:49:22,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:49:22,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2021-07-06 18:49:22,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:49:22,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 40 transitions. [2021-07-06 18:49:22,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:49:22,731 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 10 states and 13 transitions. [2021-07-06 18:49:22,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-07-06 18:49:22,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-07-06 18:49:22,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-07-06 18:49:22,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:49:22,732 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-07-06 18:49:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-07-06 18:49:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-07-06 18:49:22,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-07-06 18:49:22,748 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-07-06 18:49:22,748 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-07-06 18:49:22,748 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:49:22,748 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-07-06 18:49:22,748 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:49:22,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:49:22,749 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:49:22,749 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 18:49:22,749 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 18:49:22,749 INFO L791 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 104#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 105#L367 assume !(main_~length~0 < 1); 108#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 109#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 110#L370-3 assume !(main_~i~0 < main_~length~0); 106#L370-4 main_~j~0 := 0; 103#L374-2 [2021-07-06 18:49:22,750 INFO L793 eck$LassoCheckResult]: Loop: 103#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + (1 + main_#t~mem209);havoc main_#t~mem209; 103#L374-2 [2021-07-06 18:49:22,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2021-07-06 18:49:22,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:22,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425877791] [2021-07-06 18:49:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:22,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:49:22,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 18:49:22,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 18:49:22,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:49:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:49:22,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 18:49:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425877791] [2021-07-06 18:49:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425877791] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 18:49:22,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 18:49:22,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 18:49:22,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017281720] [2021-07-06 18:49:22,784 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-07-06 18:49:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2021-07-06 18:49:22,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:22,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022190406] [2021-07-06 18:49:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:22,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,789 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,791 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,792 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:22,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 18:49:22,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 18:49:22,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 18:49:22,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-06 18:49:22,830 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 18:49:22,861 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-07-06 18:49:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 18:49:22,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2021-07-06 18:49:22,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:49:22,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2021-07-06 18:49:22,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-07-06 18:49:22,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-07-06 18:49:22,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2021-07-06 18:49:22,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:49:22,863 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-07-06 18:49:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2021-07-06 18:49:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-07-06 18:49:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:49:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-07-06 18:49:22,866 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-07-06 18:49:22,866 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-07-06 18:49:22,866 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 18:49:22,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2021-07-06 18:49:22,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 18:49:22,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:49:22,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:49:22,868 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 18:49:22,868 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 18:49:22,868 INFO L791 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~post207, main_#t~mem209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 133#L367 assume !(main_~length~0 < 1); 136#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 137#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 138#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208; 139#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 140#L370-3 assume !(main_~i~0 < main_~length~0); 134#L370-4 main_~j~0 := 0; 131#L374-2 [2021-07-06 18:49:22,868 INFO L793 eck$LassoCheckResult]: Loop: 131#L374-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 + (1 + main_#t~mem209);havoc main_#t~mem209; 131#L374-2 [2021-07-06 18:49:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1182969107, now seen corresponding path program 1 times [2021-07-06 18:49:22,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:22,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831217506] [2021-07-06 18:49:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:22,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,891 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,897 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,907 INFO L82 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 2 times [2021-07-06 18:49:22,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:22,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080870040] [2021-07-06 18:49:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:22,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,916 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,919 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:49:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1982663310, now seen corresponding path program 1 times [2021-07-06 18:49:22,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:49:22,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185781598] [2021-07-06 18:49:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:49:22,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:49:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,935 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:49:22,955 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:49:22,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:49:22,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:22,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 18:49:23,091 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-07-06 18:49:23,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:23,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:49:23,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:23,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 18:49:23,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-07-06 18:49:23,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:23,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-06 18:49:23,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:49:23,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-06 18:49:23,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-07-06 18:49:23,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:49:23 BoogieIcfgContainer [2021-07-06 18:49:23,175 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:49:23,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:49:23,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:49:23,176 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:49:23,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:49:21" (3/4) ... [2021-07-06 18:49:23,186 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 18:49:23,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 18:49:23,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:49:23,217 INFO L168 Benchmark]: Toolchain (without parser) took 2407.66 ms. Allocated memory was 50.3 MB in the beginning and 94.4 MB in the end (delta: 44.0 MB). Free memory was 24.7 MB in the beginning and 48.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,218 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:49:23,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.65 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.5 MB in the beginning and 43.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,220 INFO L168 Benchmark]: Boogie Preprocessor took 27.58 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:49:23,220 INFO L168 Benchmark]: RCFGBuilder took 309.29 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 41.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,220 INFO L168 Benchmark]: BuchiAutomizer took 1637.05 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 41.9 MB in the beginning and 50.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,221 INFO L168 Benchmark]: Witness Printer took 41.02 ms. Allocated memory is still 94.4 MB. Free memory was 50.4 MB in the beginning and 48.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:49:23,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 31.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.65 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.5 MB in the beginning and 43.3 MB in the end (delta: -18.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 41.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.58 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 40.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 309.29 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 41.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1637.05 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 41.9 MB in the beginning and 50.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * Witness Printer took 41.02 ms. Allocated memory is still 94.4 MB. Free memory was 50.4 MB in the beginning and 48.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function length + -1 * i and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 8.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 24 SDslu, 10 SDs, 0 SdLazy, 25 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital100 mio100 ax100 hnf99 lsp93 ukn80 mio100 lsp63 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 374]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@434e5372=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61257a99=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cb5718=0, length=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@17b02c58=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cb5718=2, j=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@555d4a77=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 374]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i