./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/array20_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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/array20_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 ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:04:43,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:04:43,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:04:43,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:04:43,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:04:43,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:04:43,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:04:43,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:04:43,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:04:43,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:04:43,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:04:43,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:04:43,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:04:43,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:04:43,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:04:43,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:04:43,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:04:43,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:04:43,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:04:43,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:04:43,610 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:04:43,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:04:43,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:04:43,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:04:43,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:04:43,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:04:43,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:04:43,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:04:43,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:04:43,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:04:43,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:04:43,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:04:43,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:04:43,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:04:43,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:04:43,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:04:43,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:04:43,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:04:43,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:04:43,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:04:43,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:04:43,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:04:43,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 15:04:43,649 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:04:43,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:04:43,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:04:43,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:04:43,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:04:43,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:04:43,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:04:43,655 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:04:43,655 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:04:43,656 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:04:43,656 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:04:43,656 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:04:43,656 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:04:43,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:04:43,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:04:43,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:04:43,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:04:43,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:04:43,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:04:43,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:04:43,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:04:43,659 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:04:43,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:04:43,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:04:43,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:04:43,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:04:43,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:04:43,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:04:43,660 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:04:43,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea5bfa8a156bc44b081b7e322054bf4f8b50233fa79918ee2b9ae09354893d3a [2022-07-14 15:04:43,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:04:43,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:04:43,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:04:43,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:04:43,832 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:04:43,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/array20_alloca.i [2022-07-14 15:04:43,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc44af40e/9baeada60c5c431dae433997e93b73d5/FLAG31fb9bb57 [2022-07-14 15:04:44,243 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:04:44,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/array20_alloca.i [2022-07-14 15:04:44,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc44af40e/9baeada60c5c431dae433997e93b73d5/FLAG31fb9bb57 [2022-07-14 15:04:44,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc44af40e/9baeada60c5c431dae433997e93b73d5 [2022-07-14 15:04:44,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:04:44,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:04:44,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:44,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:04:44,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:04:44,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1edf3e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44, skipping insertion in model container [2022-07-14 15:04:44,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:04:44,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:04:44,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:44,922 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:04:44,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:04:44,961 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:04:44,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44 WrapperNode [2022-07-14 15:04:44,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:04:44,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:44,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:04:44,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:04:44,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,987 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-07-14 15:04:44,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:04:44,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:04:44,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:04:44,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:04:44,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:44,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:45,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:45,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:04:45,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:04:45,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:04:45,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:04:45,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (1/1) ... [2022-07-14 15:04:45,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:45,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:45,030 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) [2022-07-14 15:04:45,049 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 [2022-07-14 15:04:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 15:04:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 15:04:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 15:04:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 15:04:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:04:45,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:04:45,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:04:45,103 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:04:45,194 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:04:45,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:04:45,198 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 15:04:45,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:45 BoogieIcfgContainer [2022-07-14 15:04:45,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:04:45,200 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:04:45,200 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:04:45,202 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:04:45,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:45,202 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:04:44" (1/3) ... [2022-07-14 15:04:45,214 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6304dab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:45, skipping insertion in model container [2022-07-14 15:04:45,214 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:45,214 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:04:44" (2/3) ... [2022-07-14 15:04:45,214 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6304dab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:04:45, skipping insertion in model container [2022-07-14 15:04:45,215 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:04:45,215 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:45" (3/3) ... [2022-07-14 15:04:45,216 INFO L354 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2022-07-14 15:04:45,247 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:04:45,248 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:04:45,248 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:04:45,248 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:04:45,248 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:04:45,248 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:04:45,248 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:04:45,248 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:04:45,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2022-07-14 15:04:45,262 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-14 15:04:45,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:45,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:45,266 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:45,266 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:04:45,266 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:04:45,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2022-07-14 15:04:45,267 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-14 15:04:45,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:45,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:45,268 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:04:45,268 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-14 15:04:45,272 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 9#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 7#L370-3true [2022-07-14 15:04:45,272 INFO L754 eck$LassoCheckResult]: Loop: 7#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 12#L372true assume main_#t~mem209#1 < 1;havoc main_#t~mem209#1;call write~int(1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 14#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 7#L370-3true [2022-07-14 15:04:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2022-07-14 15:04:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070250707] [2022-07-14 15:04:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,358 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2022-07-14 15:04:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217713622] [2022-07-14 15:04:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,407 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2022-07-14 15:04:45,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:45,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994903046] [2022-07-14 15:04:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,436 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:45,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:45,671 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:04:45,671 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:04:45,671 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:04:45,671 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:04:45,671 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:04:45,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:45,672 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:04:45,672 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:04:45,672 INFO L133 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2022-07-14 15:04:45,672 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:04:45,672 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:04:45,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:04:45,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:04:45,980 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:04:45,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:45,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:45,983 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) [2022-07-14 15:04:45,984 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 [2022-07-14 15:04:45,986 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 [2022-07-14 15:04:45,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:45,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:46,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:46,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:46,026 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,048 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) [2022-07-14 15:04:46,048 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 [2022-07-14 15:04:46,050 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 [2022-07-14 15:04:46,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,063 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:46,063 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:46,078 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,095 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 [2022-07-14 15:04:46,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,097 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) [2022-07-14 15:04:46,098 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 [2022-07-14 15:04:46,099 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 [2022-07-14 15:04:46,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:46,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:46,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:46,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,136 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 [2022-07-14 15:04:46,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,137 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) [2022-07-14 15:04:46,138 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 [2022-07-14 15:04:46,139 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 [2022-07-14 15:04:46,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:46,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:46,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:46,157 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-14 15:04:46,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,176 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) [2022-07-14 15:04:46,193 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 [2022-07-14 15:04:46,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:04:46,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:04:46,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:04:46,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,215 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 [2022-07-14 15:04:46,230 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 [2022-07-14 15:04:46,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,233 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2022-07-14 15:04:46,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-14 15:04:46,240 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 [2022-07-14 15:04:46,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,250 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:46,251 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:46,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-14 15:04:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,282 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2022-07-14 15:04:46,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-14 15:04:46,284 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 [2022-07-14 15:04:46,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:46,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:46,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:04:46,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,362 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2022-07-14 15:04:46,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-14 15:04:46,364 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 [2022-07-14 15:04:46,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:04:46,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:04:46,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:04:46,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:04:46,378 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 15:04:46,378 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 15:04:46,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:04:46,411 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2022-07-14 15:04:46,411 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 10 variables to zero. [2022-07-14 15:04:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:04:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,414 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2022-07-14 15:04:46,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-14 15:04:46,416 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:04:46,437 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-14 15:04:46,437 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:04:46,437 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~arr~0#1.offset) = -4*ULTIMATE.start_main_~i~0#1 + 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 1*ULTIMATE.start_main_~arr~0#1.offset Supporting invariants [] [2022-07-14 15:04:46,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-14 15:04:46,462 INFO L293 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2022-07-14 15:04:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:46,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:04:46,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:46,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:04:46,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:46,577 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 [2022-07-14 15:04:46,578 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-14 15:04:46,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 32 states and 44 transitions. Complement of second has 7 states. [2022-07-14 15:04:46,636 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 [2022-07-14 15:04:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-07-14 15:04:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-07-14 15:04:46,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-14 15:04:46,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:46,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2022-07-14 15:04:46,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:46,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2022-07-14 15:04:46,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:04:46,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2022-07-14 15:04:46,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:46,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2022-07-14 15:04:46,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-14 15:04:46,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:46,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2022-07-14 15:04:46,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:46,648 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-07-14 15:04:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2022-07-14 15:04:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-14 15:04:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2022-07-14 15:04:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2022-07-14 15:04:46,664 INFO L392 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-07-14 15:04:46,664 INFO L374 stractBuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-07-14 15:04:46,664 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:04:46,664 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2022-07-14 15:04:46,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:46,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:46,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:46,665 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:46,665 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:46,666 INFO L752 eck$LassoCheckResult]: Stem: 109#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 110#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 116#L367 assume !(main_~length~0#1 < 1); 111#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 112#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 113#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 114#L370-4 main_~j~0#1 := 1; 115#L377-2 [2022-07-14 15:04:46,666 INFO L754 eck$LassoCheckResult]: Loop: 115#L377-2 assume !!(1 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 115#L377-2 [2022-07-14 15:04:46,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2022-07-14 15:04:46,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:46,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330113177] [2022-07-14 15:04:46,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:04:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330113177] [2022-07-14 15:04:46,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330113177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:04:46,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:04:46,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 15:04:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668281944] [2022-07-14 15:04:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:04:46,703 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 15:04:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,703 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2022-07-14 15:04:46,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:46,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389029957] [2022-07-14 15:04:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:46,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:04:46,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38051775] [2022-07-14 15:04:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:04:46,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:04:46,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 15:04:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:46,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:46,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:04:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 15:04:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 15:04:46,766 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 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) [2022-07-14 15:04:46,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:04:46,786 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2022-07-14 15:04:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 15:04:46,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2022-07-14 15:04:46,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:46,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2022-07-14 15:04:46,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-14 15:04:46,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:46,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2022-07-14 15:04:46,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:46,788 INFO L369 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-14 15:04:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2022-07-14 15:04:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2022-07-14 15:04:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 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) [2022-07-14 15:04:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-07-14 15:04:46,790 INFO L392 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-07-14 15:04:46,790 INFO L374 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-07-14 15:04:46,790 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:04:46,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2022-07-14 15:04:46,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:46,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:46,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:46,791 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:46,791 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:46,791 INFO L752 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 143#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 147#L367 assume !(main_~length~0#1 < 1); 140#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 141#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 144#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 148#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 150#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 149#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 145#L370-4 main_~j~0#1 := 1; 146#L377-2 [2022-07-14 15:04:46,792 INFO L754 eck$LassoCheckResult]: Loop: 146#L377-2 assume !!(1 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 146#L377-2 [2022-07-14 15:04:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2022-07-14 15:04:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:46,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406836709] [2022-07-14 15:04:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:46,803 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:46,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,813 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2022-07-14 15:04:46,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:46,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116638376] [2022-07-14 15:04:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:46,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:04:46,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908515175] [2022-07-14 15:04:46,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 15:04:46,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:04:46,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,852 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:04:46,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 15:04:46,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 15:04:46,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-14 15:04:46,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:46,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2022-07-14 15:04:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:46,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075996815] [2022-07-14 15:04:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:46,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:04:46,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826639415] [2022-07-14 15:04:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:46,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:04:46,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:46,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:04:46,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 15:04:46,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-14 15:04:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:04:46,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 15:04:46,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:04:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:47,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 15:04:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:04:47,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:04:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075996815] [2022-07-14 15:04:47,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 15:04:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826639415] [2022-07-14 15:04:47,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826639415] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 15:04:47,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 15:04:47,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-07-14 15:04:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264415066] [2022-07-14 15:04:47,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 15:04:47,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:04:47,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 15:04:47,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-14 15:04:47,096 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) [2022-07-14 15:04:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:04:47,156 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2022-07-14 15:04:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 15:04:47,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-14 15:04:47,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:47,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2022-07-14 15:04:47,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-14 15:04:47,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 15:04:47,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2022-07-14 15:04:47,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:04:47,158 INFO L369 hiAutomatonCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-07-14 15:04:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2022-07-14 15:04:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-07-14 15:04:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-07-14 15:04:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-14 15:04:47,161 INFO L392 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-14 15:04:47,161 INFO L374 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-14 15:04:47,161 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 15:04:47,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2022-07-14 15:04:47,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 15:04:47,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:04:47,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:04:47,164 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:04:47,165 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:04:47,165 INFO L752 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 256#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 260#L367 assume !(main_~length~0#1 < 1); 253#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 254#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 257#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 261#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 266#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 262#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 263#L372 assume !(main_#t~mem209#1 < 1);havoc main_#t~mem209#1; 264#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 265#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 258#L370-4 main_~j~0#1 := 1; 259#L377-2 [2022-07-14 15:04:47,165 INFO L754 eck$LassoCheckResult]: Loop: 259#L377-2 assume !!(1 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4);main_~j~0#1 := main_~j~0#1 * main_#t~mem210#1;havoc main_#t~mem210#1; 259#L377-2 [2022-07-14 15:04:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2022-07-14 15:04:47,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:47,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4494383] [2022-07-14 15:04:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:47,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:47,183 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:47,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2022-07-14 15:04:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:47,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308449210] [2022-07-14 15:04:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:47,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:04:47,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92035221] [2022-07-14 15:04:47,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 15:04:47,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:04:47,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:47,218 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:04:47,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 15:04:47,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-14 15:04:47,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-14 15:04:47,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:47,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:04:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2022-07-14 15:04:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:04:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253563563] [2022-07-14 15:04:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:04:47,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:04:47,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 15:04:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772565191] [2022-07-14 15:04:47,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 15:04:47,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 15:04:47,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:04:47,259 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 15:04:47,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 15:04:47,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 15:04:47,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-14 15:04:47,295 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:04:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:04:47,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:04:47,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:04:47 BoogieIcfgContainer [2022-07-14 15:04:47,590 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:04:47,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:04:47,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:04:47,590 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:04:47,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:04:45" (3/4) ... [2022-07-14 15:04:47,592 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 15:04:47,627 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 15:04:47,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:04:47,627 INFO L158 Benchmark]: Toolchain (without parser) took 2987.29ms. Allocated memory was 81.8MB in the beginning and 134.2MB in the end (delta: 52.4MB). Free memory was 46.4MB in the beginning and 59.9MB in the end (delta: -13.5MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,628 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:04:47,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.53ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.2MB in the beginning and 65.7MB in the end (delta: -19.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.92ms. Allocated memory is still 98.6MB. Free memory was 65.7MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,628 INFO L158 Benchmark]: Boogie Preprocessor took 13.25ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 62.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,628 INFO L158 Benchmark]: RCFGBuilder took 197.16ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 52.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,629 INFO L158 Benchmark]: BuchiAutomizer took 2390.20ms. Allocated memory was 98.6MB in the beginning and 134.2MB in the end (delta: 35.7MB). Free memory was 52.3MB in the beginning and 61.1MB in the end (delta: -8.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-07-14 15:04:47,629 INFO L158 Benchmark]: Witness Printer took 36.83ms. Allocated memory is still 134.2MB. Free memory was 61.1MB in the beginning and 59.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:04:47,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 60.7MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.53ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.2MB in the beginning and 65.7MB in the end (delta: -19.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.92ms. Allocated memory is still 98.6MB. Free memory was 65.7MB in the beginning and 63.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.25ms. Allocated memory is still 98.6MB. Free memory was 63.6MB in the beginning and 62.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 197.16ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 52.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2390.20ms. Allocated memory was 98.6MB in the beginning and 134.2MB in the end (delta: 35.7MB). Free memory was 52.3MB in the beginning and 61.1MB in the end (delta: -8.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 36.83ms. Allocated memory is still 134.2MB. Free memory was 61.1MB in the beginning and 59.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -4 * i + unknown-#length-unknown[arr] + -1 * arr and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital102 mio100 ax100 hnf100 lsp91 ukn83 mio100 lsp61 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: 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 {j=1, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@fabeb66=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f6e1a73=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f6e1a73=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2e52e04e=0, \result=0, length=2, i=2, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2c159cba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@5049c22e=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2584e7cb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: 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