./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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/array-memsafety/openbsd_cstrspn-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46421108dc6473f7bf7bcbb7826a3247c1ccc8d1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 06:03:00,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 06:03:00,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 06:03:00,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 06:03:00,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 06:03:00,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 06:03:00,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 06:03:00,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 06:03:00,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 06:03:00,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 06:03:00,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 06:03:00,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 06:03:00,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 06:03:00,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 06:03:00,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 06:03:00,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 06:03:00,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 06:03:00,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 06:03:00,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 06:03:00,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 06:03:00,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 06:03:00,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 06:03:00,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 06:03:00,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 06:03:00,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 06:03:00,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 06:03:00,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 06:03:00,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 06:03:00,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 06:03:00,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 06:03:00,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 06:03:00,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 06:03:00,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 06:03:00,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 06:03:00,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 06:03:00,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 06:03:00,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 06:03:00,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 06:03:00,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 06:03:00,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 06:03:00,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 06:03:00,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 06:03:00,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 06:03:00,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 06:03:00,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 06:03:00,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 06:03:00,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 06:03:00,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 06:03:00,556 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 06:03:00,557 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 06:03:00,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 06:03:00,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 06:03:00,558 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 06:03:00,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 06:03:00,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 06:03:00,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 06:03:00,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 06:03:00,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 06:03:00,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 06:03:00,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 06:03:00,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 06:03:00,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 06:03:00,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 06:03:00,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 06:03:00,561 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 06:03:00,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 06:03:00,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 06:03:00,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 06:03:00,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 06:03:00,563 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 06:03:00,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 06:03:00,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 06:03:00,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 06:03:00,564 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 06:03:00,565 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 06:03:00,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46421108dc6473f7bf7bcbb7826a3247c1ccc8d1 [2020-10-26 06:03:00,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 06:03:00,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 06:03:00,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 06:03:01,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 06:03:01,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 06:03:01,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2020-10-26 06:03:01,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ba5028c/91eb02a5bba44faa872cc83787a1d613/FLAG6f7841282 [2020-10-26 06:03:01,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 06:03:01,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrspn-alloca-2.i [2020-10-26 06:03:01,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ba5028c/91eb02a5bba44faa872cc83787a1d613/FLAG6f7841282 [2020-10-26 06:03:02,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ba5028c/91eb02a5bba44faa872cc83787a1d613 [2020-10-26 06:03:02,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 06:03:02,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 06:03:02,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 06:03:02,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 06:03:02,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 06:03:02,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3625c6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02, skipping insertion in model container [2020-10-26 06:03:02,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 06:03:02,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 06:03:02,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 06:03:02,495 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 06:03:02,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 06:03:02,611 INFO L208 MainTranslator]: Completed translation [2020-10-26 06:03:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02 WrapperNode [2020-10-26 06:03:02,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 06:03:02,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 06:03:02,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 06:03:02,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 06:03:02,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 06:03:02,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 06:03:02,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 06:03:02,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 06:03:02,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... [2020-10-26 06:03:02,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 06:03:02,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 06:03:02,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 06:03:02,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 06:03:02,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 06:03:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 06:03:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 06:03:02,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 06:03:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 06:03:02,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 06:03:03,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 06:03:03,111 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-26 06:03:03,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:03:03 BoogieIcfgContainer [2020-10-26 06:03:03,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 06:03:03,114 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 06:03:03,114 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 06:03:03,119 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 06:03:03,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:03:03,121 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 06:03:02" (1/3) ... [2020-10-26 06:03:03,122 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ea4cfa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 06:03:03, skipping insertion in model container [2020-10-26 06:03:03,122 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:03:03,123 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:03:02" (2/3) ... [2020-10-26 06:03:03,123 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ea4cfa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 06:03:03, skipping insertion in model container [2020-10-26 06:03:03,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 06:03:03,124 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:03:03" (3/3) ... [2020-10-26 06:03:03,126 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrspn-alloca-2.i [2020-10-26 06:03:03,192 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 06:03:03,192 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 06:03:03,192 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 06:03:03,193 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 06:03:03,193 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 06:03:03,193 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 06:03:03,193 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 06:03:03,194 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 06:03:03,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-10-26 06:03:03,275 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-10-26 06:03:03,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:03,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:03,294 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 06:03:03,294 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 06:03:03,297 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 06:03:03,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2020-10-26 06:03:03,302 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 8 [2020-10-26 06:03:03,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:03,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:03,303 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-26 06:03:03,303 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 06:03:03,322 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 19#L528true assume !(main_~length1~0 < 1); 5#L528-2true assume !(main_~length2~0 < 1); 15#L531-1true call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 8#L537-3true [2020-10-26 06:03:03,325 INFO L796 eck$LassoCheckResult]: Loop: 8#L537-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 7#L537-2true main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 8#L537-3true [2020-10-26 06:03:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2020-10-26 06:03:03,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:03,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380075267] [2020-10-26 06:03:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,585 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:03,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2020-10-26 06:03:03,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:03,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960214510] [2020-10-26 06:03:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,681 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:03,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:03,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2020-10-26 06:03:03,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:03,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621691292] [2020-10-26 06:03:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:03,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:03,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:04,096 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-26 06:03:04,184 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 06:03:04,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 06:03:04,185 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 06:03:04,185 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 06:03:04,185 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 06:03:04,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:04,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 06:03:04,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 06:03:04,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration1_Lasso [2020-10-26 06:03:04,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 06:03:04,187 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 06:03:04,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:04,809 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 06:03:04,814 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:04,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:04,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:04,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:04,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:04,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:04,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:04,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:04,850 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:04,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:04,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:04,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:04,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:04,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:04,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:04,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:04,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:04,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:04,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:04,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:04,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:04,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:04,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:04,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:04,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:04,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:04,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:04,986 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:04,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:04,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:04,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:04,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:04,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:04,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:04,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:04,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:05,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,064 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,070 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,070 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,092 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,133 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,138 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:05,180 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,207 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,211 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,211 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,211 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,236 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,269 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,271 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,271 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:05,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,305 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,305 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,310 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,363 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,410 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,466 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:05,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:05,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:05,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,534 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,534 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,586 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,586 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:05,590 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,627 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,632 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,632 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,636 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,675 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:05,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:05,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:05,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:05,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:05,684 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:05,684 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,706 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 06:03:05,747 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2020-10-26 06:03:05,747 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:05,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:05,758 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 06:03:05,759 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 06:03:05,760 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~length1~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~length1~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-26 06:03:05,927 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-10-26 06:03:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:05,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 06:03:05,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:05,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 06:03:05,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:06,014 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 06:03:06,015 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 3 states. [2020-10-26 06:03:06,074 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 3 states. Result 48 states and 67 transitions. Complement of second has 7 states. [2020-10-26 06:03:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 06:03:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2020-10-26 06:03:06,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-26 06:03:06,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:06,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-26 06:03:06,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:06,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 45 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-26 06:03:06,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:06,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 67 transitions. [2020-10-26 06:03:06,088 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 06:03:06,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 16 states and 22 transitions. [2020-10-26 06:03:06,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 06:03:06,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-26 06:03:06,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2020-10-26 06:03:06,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 06:03:06,095 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-10-26 06:03:06,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2020-10-26 06:03:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-26 06:03:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-26 06:03:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-10-26 06:03:06,125 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-10-26 06:03:06,125 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-10-26 06:03:06,125 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 06:03:06,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-10-26 06:03:06,126 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-26 06:03:06,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:06,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:06,127 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:06,127 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-26 06:03:06,128 INFO L794 eck$LassoCheckResult]: Stem: 153#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 150#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 151#L528 assume !(main_~length1~0 < 1); 142#L528-2 assume !(main_~length2~0 < 1); 143#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 146#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 147#L537-4 main_~i~1 := 0; 148#L541-3 [2020-10-26 06:03:06,128 INFO L796 eck$LassoCheckResult]: Loop: 148#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 155#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 148#L541-3 [2020-10-26 06:03:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2020-10-26 06:03:06,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:06,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214938008] [2020-10-26 06:03:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:06,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2020-10-26 06:03:06,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:06,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226003400] [2020-10-26 06:03:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2020-10-26 06:03:06,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40817596] [2020-10-26 06:03:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:06,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:06,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:06,408 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-26 06:03:06,476 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 06:03:06,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 06:03:06,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 06:03:06,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 06:03:06,477 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 06:03:06,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:06,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 06:03:06,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 06:03:06,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration2_Lasso [2020-10-26 06:03:06,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 06:03:06,478 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 06:03:06,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:06,942 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 06:03:06,942 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:06,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:06,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:06,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:06,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:06,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:06,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:06,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:06,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:06,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,002 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,009 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,009 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,017 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:07,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:07,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,073 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,120 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,120 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,124 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,160 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,286 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,323 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,327 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,339 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:07,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:07,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:07,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:07,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:07,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:07,388 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:07,388 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,401 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 06:03:07,442 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-10-26 06:03:07,442 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:07,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 06:03:07,465 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 06:03:07,465 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 06:03:07,465 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2020-10-26 06:03:07,502 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2020-10-26 06:03:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:07,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 06:03:07,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 06:03:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:07,548 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 06:03:07,548 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-26 06:03:07,568 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 34 transitions. Complement of second has 6 states. [2020-10-26 06:03:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 06:03:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-10-26 06:03:07,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-26 06:03:07,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:07,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 9 letters. Loop has 2 letters. [2020-10-26 06:03:07,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:07,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 7 letters. Loop has 4 letters. [2020-10-26 06:03:07,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:07,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 34 transitions. [2020-10-26 06:03:07,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:07,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 17 states and 24 transitions. [2020-10-26 06:03:07,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-26 06:03:07,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-10-26 06:03:07,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2020-10-26 06:03:07,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 06:03:07,575 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-10-26 06:03:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2020-10-26 06:03:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-26 06:03:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 06:03:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2020-10-26 06:03:07,578 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-10-26 06:03:07,578 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-10-26 06:03:07,578 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-26 06:03:07,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2020-10-26 06:03:07,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:07,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:07,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:07,580 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:07,580 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 06:03:07,580 INFO L794 eck$LassoCheckResult]: Stem: 266#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 263#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 264#L528 assume !(main_~length1~0 < 1); 255#L528-2 assume !(main_~length2~0 < 1); 256#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 259#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 260#L537-4 main_~i~1 := 0; 261#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 253#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 254#L522 [2020-10-26 06:03:07,581 INFO L796 eck$LassoCheckResult]: Loop: 254#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 262#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 267#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 265#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 254#L522 [2020-10-26 06:03:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2020-10-26 06:03:07,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:07,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687862554] [2020-10-26 06:03:07,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:07,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:07,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:07,618 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 1 times [2020-10-26 06:03:07,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:07,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084269816] [2020-10-26 06:03:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:07,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:07,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:07,655 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:07,659 INFO L82 PathProgramCache]: Analyzing trace with hash -587636803, now seen corresponding path program 1 times [2020-10-26 06:03:07,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:07,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067923600] [2020-10-26 06:03:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:07,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067923600] [2020-10-26 06:03:07,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 06:03:07,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-26 06:03:07,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810122621] [2020-10-26 06:03:08,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 06:03:08,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 06:03:08,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 06:03:08,048 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 9 states. [2020-10-26 06:03:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 06:03:08,148 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2020-10-26 06:03:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 06:03:08,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2020-10-26 06:03:08,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:08,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 24 transitions. [2020-10-26 06:03:08,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 06:03:08,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-10-26 06:03:08,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2020-10-26 06:03:08,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 06:03:08,151 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-26 06:03:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2020-10-26 06:03:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-26 06:03:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-26 06:03:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2020-10-26 06:03:08,154 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-10-26 06:03:08,154 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-10-26 06:03:08,155 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-26 06:03:08,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2020-10-26 06:03:08,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:08,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:08,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:08,156 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:08,157 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 06:03:08,157 INFO L794 eck$LassoCheckResult]: Stem: 325#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 322#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 323#L528 assume !(main_~length1~0 < 1); 314#L528-2 assume !(main_~length2~0 < 1); 315#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 318#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 319#L537-4 main_~i~1 := 0; 320#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 327#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 328#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 312#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 313#L522 [2020-10-26 06:03:08,157 INFO L796 eck$LassoCheckResult]: Loop: 313#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 321#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 326#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 324#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 313#L522 [2020-10-26 06:03:08,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2087704584, now seen corresponding path program 1 times [2020-10-26 06:03:08,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874566051] [2020-10-26 06:03:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,190 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 2 times [2020-10-26 06:03:08,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696736421] [2020-10-26 06:03:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,205 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1860214623, now seen corresponding path program 1 times [2020-10-26 06:03:08,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025360154] [2020-10-26 06:03:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 06:03:08,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025360154] [2020-10-26 06:03:08,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 06:03:08,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 06:03:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25126827] [2020-10-26 06:03:08,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 06:03:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 06:03:08,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 06:03:08,484 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. cyclomatic complexity: 9 Second operand 8 states. [2020-10-26 06:03:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 06:03:08,588 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-10-26 06:03:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 06:03:08,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-10-26 06:03:08,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 06:03:08,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 36 transitions. [2020-10-26 06:03:08,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-10-26 06:03:08,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-10-26 06:03:08,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 36 transitions. [2020-10-26 06:03:08,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 06:03:08,591 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2020-10-26 06:03:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 36 transitions. [2020-10-26 06:03:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-10-26 06:03:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-26 06:03:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-26 06:03:08,594 INFO L714 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-26 06:03:08,594 INFO L594 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-26 06:03:08,594 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-26 06:03:08,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2020-10-26 06:03:08,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 06:03:08,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:08,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:08,596 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:08,596 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 06:03:08,596 INFO L794 eck$LassoCheckResult]: Stem: 395#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 391#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 392#L528 assume !(main_~length1~0 < 1); 381#L528-2 assume !(main_~length2~0 < 1); 382#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 385#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 386#L537-4 main_~i~1 := 0; 388#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 398#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 399#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 379#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 380#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 394#L520-3 [2020-10-26 06:03:08,596 INFO L796 eck$LassoCheckResult]: Loop: 394#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 400#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 393#L521 assume !(cstrspn_~sc~0 == cstrspn_~c~0); 394#L520-3 [2020-10-26 06:03:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,597 INFO L82 PathProgramCache]: Analyzing trace with hash -294332619, now seen corresponding path program 1 times [2020-10-26 06:03:08,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337565072] [2020-10-26 06:03:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 78613, now seen corresponding path program 1 times [2020-10-26 06:03:08,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816620806] [2020-10-26 06:03:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,643 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:08,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1860214625, now seen corresponding path program 1 times [2020-10-26 06:03:08,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:08,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549759905] [2020-10-26 06:03:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:08,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:08,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:09,271 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 117 [2020-10-26 06:03:09,491 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-26 06:03:09,493 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 06:03:09,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 06:03:09,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 06:03:09,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 06:03:09,494 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 06:03:09,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:09,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 06:03:09,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 06:03:09,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration5_Lasso [2020-10-26 06:03:09,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 06:03:09,495 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 06:03:09,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:09,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,000 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-10-26 06:03:10,131 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-26 06:03:10,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:10,484 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-26 06:03:10,966 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 06:03:10,966 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:10,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:10,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:10,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:10,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:10,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:10,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:10,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:10,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:10,974 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:10,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:10,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:11,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:11,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:11,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:11,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:11,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:11,031 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:11,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:11,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:11,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:11,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:11,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:11,074 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:11,074 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:11,078 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:11,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:11,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:11,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:11,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:11,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:11,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:11,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:11,126 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:11,153 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:11,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:11,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:11,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:11,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:11,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:11,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:11,193 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 06:03:11,251 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2020-10-26 06:03:11,251 INFO L444 ModelExtractionUtils]: 28 out of 58 variables were initially zero. Simplification set additionally 27 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:11,256 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 06:03:11,258 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 06:03:11,258 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 06:03:11,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_3, ULTIMATE.start_cstrspn_~spanp~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_3 - 1*ULTIMATE.start_cstrspn_~spanp~0.offset Supporting invariants [] [2020-10-26 06:03:11,356 INFO L297 tatePredicateManager]: 19 out of 20 supporting invariants were superfluous and have been removed [2020-10-26 06:03:11,359 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 06:03:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:11,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 06:03:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:11,476 WARN L261 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 06:03:11,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:11,517 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-10-26 06:03:11,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-10-26 06:03:11,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 38 states and 46 transitions. Complement of second has 7 states. [2020-10-26 06:03:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 06:03:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-10-26 06:03:11,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 3 letters. [2020-10-26 06:03:11,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:11,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 3 letters. [2020-10-26 06:03:11,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:11,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 12 letters. Loop has 6 letters. [2020-10-26 06:03:11,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:11,594 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 46 transitions. [2020-10-26 06:03:11,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:11,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 24 states and 30 transitions. [2020-10-26 06:03:11,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-26 06:03:11,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-26 06:03:11,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2020-10-26 06:03:11,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 06:03:11,601 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2020-10-26 06:03:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2020-10-26 06:03:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-26 06:03:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 06:03:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2020-10-26 06:03:11,608 INFO L714 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-10-26 06:03:11,608 INFO L594 BuchiCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-10-26 06:03:11,608 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-26 06:03:11,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 29 transitions. [2020-10-26 06:03:11,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-26 06:03:11,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:11,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:11,612 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:11,612 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 06:03:11,612 INFO L794 eck$LassoCheckResult]: Stem: 617#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 611#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 612#L528 assume !(main_~length1~0 < 1); 603#L528-2 assume !(main_~length2~0 < 1); 604#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 607#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 605#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 606#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 608#L537-4 main_~i~1 := 0; 609#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 621#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 622#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 601#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 602#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 610#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 620#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 613#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 614#L522 [2020-10-26 06:03:11,613 INFO L796 eck$LassoCheckResult]: Loop: 614#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 623#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 618#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 619#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 614#L522 [2020-10-26 06:03:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:11,614 INFO L82 PathProgramCache]: Analyzing trace with hash -796682687, now seen corresponding path program 1 times [2020-10-26 06:03:11,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:11,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664694060] [2020-10-26 06:03:11,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:11,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:11,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:11,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 3 times [2020-10-26 06:03:11,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:11,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555556330] [2020-10-26 06:03:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:11,693 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:11,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:11,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash 477217064, now seen corresponding path program 2 times [2020-10-26 06:03:11,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:11,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981754278] [2020-10-26 06:03:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 06:03:11,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981754278] [2020-10-26 06:03:11,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590346977] [2020-10-26 06:03:11,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 06:03:12,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 06:03:12,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 06:03:12,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 46 conjunts are in the unsatisfiable core [2020-10-26 06:03:12,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:12,079 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-26 06:03:12,080 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-10-26 06:03:12,082 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 06:03:12,094 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 06:03:12,094 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 06:03:12,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:21 [2020-10-26 06:03:12,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 21 [2020-10-26 06:03:12,312 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 06:03:12,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 06:03:12,336 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-26 06:03:12,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:63, output treesize:47 [2020-10-26 06:03:12,653 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-26 06:03:12,654 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-10-26 06:03:12,656 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 06:03:12,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 06:03:12,675 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 06:03:12,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:61, output treesize:18 [2020-10-26 06:03:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 06:03:12,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 06:03:12,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-10-26 06:03:12,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703011886] [2020-10-26 06:03:12,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 06:03:12,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 06:03:12,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-26 06:03:12,836 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. cyclomatic complexity: 10 Second operand 18 states. [2020-10-26 06:03:13,377 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-26 06:03:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 06:03:13,714 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-10-26 06:03:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 06:03:13,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 52 transitions. [2020-10-26 06:03:13,716 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-26 06:03:13,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 52 transitions. [2020-10-26 06:03:13,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2020-10-26 06:03:13,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-26 06:03:13,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 52 transitions. [2020-10-26 06:03:13,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 06:03:13,718 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-10-26 06:03:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 52 transitions. [2020-10-26 06:03:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-26 06:03:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 06:03:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-26 06:03:13,723 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-26 06:03:13,723 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-26 06:03:13,723 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-26 06:03:13,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 49 transitions. [2020-10-26 06:03:13,724 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-10-26 06:03:13,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:13,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:13,725 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:13,725 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 06:03:13,726 INFO L794 eck$LassoCheckResult]: Stem: 785#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 780#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 781#L528 assume !(main_~length1~0 < 1); 770#L528-2 assume !(main_~length2~0 < 1); 771#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 774#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 772#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 773#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 775#L537-4 main_~i~1 := 0; 777#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 789#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 790#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 768#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 769#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 791#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 787#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 788#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 778#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 779#L520-3 [2020-10-26 06:03:13,726 INFO L796 eck$LassoCheckResult]: Loop: 779#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 786#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 782#L521 assume !(cstrspn_~sc~0 == cstrspn_~c~0); 779#L520-3 [2020-10-26 06:03:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:13,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1072640524, now seen corresponding path program 3 times [2020-10-26 06:03:13,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:13,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078461767] [2020-10-26 06:03:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,803 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 78613, now seen corresponding path program 2 times [2020-10-26 06:03:13,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:13,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956156813] [2020-10-26 06:03:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,815 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 477217066, now seen corresponding path program 1 times [2020-10-26 06:03:13,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:13,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369817733] [2020-10-26 06:03:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:13,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:13,898 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:15,136 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 199 DAG size of output: 160 [2020-10-26 06:03:15,479 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-26 06:03:15,483 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 06:03:15,483 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 06:03:15,483 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 06:03:15,483 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 06:03:15,483 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 06:03:15,483 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:15,483 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 06:03:15,483 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 06:03:15,483 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration7_Lasso [2020-10-26 06:03:15,483 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 06:03:15,483 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 06:03:15,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,216 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2020-10-26 06:03:16,410 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-26 06:03:16,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:16,713 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 06:03:17,137 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 06:03:17,325 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-26 06:03:17,464 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 06:03:17,465 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:17,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:17,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:17,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:17,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:17,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:17,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:17,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:17,514 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:17,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:17,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:17,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:17,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:17,525 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:17,545 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:17,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:17,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:17,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:17,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:17,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:17,587 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:17,587 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,594 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,637 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:17,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:17,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:17,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:17,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:17,640 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:17,641 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:17,645 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:17,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:17,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:17,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:17,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:17,690 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:17,690 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:17,718 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 06:03:17,783 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2020-10-26 06:03:17,783 INFO L444 ModelExtractionUtils]: 8 out of 58 variables were initially zero. Simplification set additionally 47 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:17,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 06:03:17,789 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 06:03:17,789 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 06:03:17,789 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_4, ULTIMATE.start_cstrspn_~spanp~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc9.base)_4 - 1*ULTIMATE.start_cstrspn_~spanp~0.offset Supporting invariants [] [2020-10-26 06:03:17,962 INFO L297 tatePredicateManager]: 31 out of 33 supporting invariants were superfluous and have been removed [2020-10-26 06:03:17,966 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 06:03:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,078 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:18,105 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-10-26 06:03:18,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-10-26 06:03:18,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 49 states and 58 transitions. Complement of second has 7 states. [2020-10-26 06:03:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 06:03:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-10-26 06:03:18,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-26 06:03:18,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:18,175 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 06:03:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,275 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:18,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 2 loop predicates [2020-10-26 06:03:18,308 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-10-26 06:03:18,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 49 states and 60 transitions. Complement of second has 7 states. [2020-10-26 06:03:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 06:03:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-10-26 06:03:18,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-26 06:03:18,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:18,386 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-26 06:03:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:18,481 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 06:03:18,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:18,507 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 2 loop predicates [2020-10-26 06:03:18,508 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16 Second operand 5 states. [2020-10-26 06:03:18,600 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 49 transitions. cyclomatic complexity: 16. Second operand 5 states. Result 54 states and 64 transitions. Complement of second has 6 states. [2020-10-26 06:03:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-26 06:03:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-10-26 06:03:18,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 18 letters. Loop has 3 letters. [2020-10-26 06:03:18,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:18,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 21 letters. Loop has 3 letters. [2020-10-26 06:03:18,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:18,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 18 letters. Loop has 6 letters. [2020-10-26 06:03:18,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:18,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 64 transitions. [2020-10-26 06:03:18,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 06:03:18,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 27 states and 33 transitions. [2020-10-26 06:03:18,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-26 06:03:18,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-10-26 06:03:18,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 33 transitions. [2020-10-26 06:03:18,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 06:03:18,613 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-26 06:03:18,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 33 transitions. [2020-10-26 06:03:18,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-10-26 06:03:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-26 06:03:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2020-10-26 06:03:18,616 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-10-26 06:03:18,616 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-10-26 06:03:18,616 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-26 06:03:18,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2020-10-26 06:03:18,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-26 06:03:18,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 06:03:18,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 06:03:18,618 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 06:03:18,619 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-26 06:03:18,619 INFO L794 eck$LassoCheckResult]: Stem: 1359#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1354#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~nondet7, main_#t~malloc8.base, main_#t~malloc8.offset, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~nondet11, main_#t~post10, main_~i~0, main_#t~nondet13, main_#t~post12, main_~i~1, main_#t~ret14, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~length2~0 := main_#t~nondet7;havoc main_#t~nondet7; 1355#L528 assume !(main_~length1~0 < 1); 1345#L528-2 assume !(main_~length2~0 < 1); 1346#L531-1 call main_#t~malloc8.base, main_#t~malloc8.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc8.base, main_#t~malloc8.offset;call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;main_~i~0 := 0; 1349#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 1347#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 1348#L537-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet11, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet11; 1350#L537-2 main_#t~post10 := main_~i~0;main_~i~0 := 1 + main_#t~post10;havoc main_#t~post10; 1363#L537-3 assume !(main_~i~0 < main_~length1~0 - 1); 1351#L537-4 main_~i~1 := 0; 1352#L541-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet13, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet13; 1361#L541-2 main_#t~post12 := main_~i~1;main_~i~1 := 1 + main_#t~post12;havoc main_#t~post12; 1362#L541-3 assume !(main_~i~1 < main_~length2~0 - 1); 1343#L541-4 call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);cstrspn_#in~s1.base, cstrspn_#in~s1.offset, cstrspn_#in~s2.base, cstrspn_#in~s2.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc cstrspn_#res;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset, cstrspn_#t~mem3, cstrspn_#t~post4.base, cstrspn_#t~post4.offset, cstrspn_#t~mem5, cstrspn_~s1.base, cstrspn_~s1.offset, cstrspn_~s2.base, cstrspn_~s2.offset, cstrspn_~p~0.base, cstrspn_~p~0.offset, cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset, cstrspn_~c~0, cstrspn_~sc~0;cstrspn_~s1.base, cstrspn_~s1.offset := cstrspn_#in~s1.base, cstrspn_#in~s1.offset;cstrspn_~s2.base, cstrspn_~s2.offset := cstrspn_#in~s2.base, cstrspn_#in~s2.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_~s1.base, cstrspn_~s1.offset;havoc cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;havoc cstrspn_~c~0;havoc cstrspn_~sc~0; 1344#L522 [2020-10-26 06:03:18,619 INFO L796 eck$LassoCheckResult]: Loop: 1344#L522 cstrspn_#t~post2.base, cstrspn_#t~post2.offset := cstrspn_~p~0.base, cstrspn_~p~0.offset;cstrspn_~p~0.base, cstrspn_~p~0.offset := cstrspn_#t~post2.base, 1 + cstrspn_#t~post2.offset;call cstrspn_#t~mem3 := read~int(cstrspn_#t~post2.base, cstrspn_#t~post2.offset, 1);cstrspn_~c~0 := cstrspn_#t~mem3;havoc cstrspn_#t~mem3;havoc cstrspn_#t~post2.base, cstrspn_#t~post2.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_~s2.base, cstrspn_~s2.offset; 1353#L520-3 cstrspn_#t~post4.base, cstrspn_#t~post4.offset := cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset;cstrspn_~spanp~0.base, cstrspn_~spanp~0.offset := cstrspn_#t~post4.base, 1 + cstrspn_#t~post4.offset;call cstrspn_#t~mem5 := read~int(cstrspn_#t~post4.base, cstrspn_#t~post4.offset, 1);cstrspn_~sc~0 := cstrspn_#t~mem5; 1360#L520-1 assume !!(0 != cstrspn_~sc~0);havoc cstrspn_#t~mem5;havoc cstrspn_#t~post4.base, cstrspn_#t~post4.offset; 1356#L521 assume cstrspn_~sc~0 == cstrspn_~c~0; 1344#L522 [2020-10-26 06:03:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1523394364, now seen corresponding path program 1 times [2020-10-26 06:03:18,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:18,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648715228] [2020-10-26 06:03:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,665 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2312936, now seen corresponding path program 4 times [2020-10-26 06:03:18,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:18,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153621232] [2020-10-26 06:03:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1430543523, now seen corresponding path program 4 times [2020-10-26 06:03:18,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 06:03:18,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979967535] [2020-10-26 06:03:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 06:03:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,709 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 06:03:18,726 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 06:03:18,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 06:03:19,855 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 152 DAG size of output: 125 [2020-10-26 06:03:20,133 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-26 06:03:20,135 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 06:03:20,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 06:03:20,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 06:03:20,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 06:03:20,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 06:03:20,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:20,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 06:03:20,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 06:03:20,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrspn-alloca-2.i_Iteration8_Lasso [2020-10-26 06:03:20,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 06:03:20,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 06:03:20,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,629 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-26 06:03:20,778 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-26 06:03:20,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:20,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 06:03:21,438 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 06:03:21,438 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:21,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,476 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,479 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,557 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,561 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,585 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,587 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,587 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,587 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,592 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,642 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,645 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,669 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,671 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,672 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,672 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,673 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,696 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,699 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,699 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,703 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:21,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:21,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:21,735 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,764 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,765 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,774 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,803 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,803 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:21,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,845 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,845 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,850 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:21,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,892 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,892 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,929 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,932 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,932 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,936 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:21,966 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:21,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:21,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:21,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:21,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:21,975 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:21,976 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:21,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:22,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:22,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,013 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-26 06:03:22,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,015 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-26 06:03:22,015 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:22,025 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:22,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:22,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,050 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:22,050 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:22,054 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,076 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:22,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:22,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,079 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:22,079 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:22,086 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 06:03:22,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 06:03:22,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:22,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 06:03:22,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 06:03:22,118 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:22,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:22,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:22,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:22,146 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 06:03:22,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 06:03:22,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 06:03:22,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 06:03:22,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 06:03:22,178 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 06:03:22,178 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 06:03:22,191 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 06:03:22,230 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2020-10-26 06:03:22,230 INFO L444 ModelExtractionUtils]: 5 out of 31 variables were initially zero. Simplification set additionally 23 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 06:03:22,233 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 06:03:22,235 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 06:03:22,235 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 06:03:22,235 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_cstrspn_~p~0.base)_1, ULTIMATE.start_cstrspn_~p~0.offset) = 1*v_rep(select #length ULTIMATE.start_cstrspn_~p~0.base)_1 - 1*ULTIMATE.start_cstrspn_~p~0.offset Supporting invariants [] [2020-10-26 06:03:22,303 INFO L297 tatePredicateManager]: 14 out of 14 supporting invariants were superfluous and have been removed [2020-10-26 06:03:22,304 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 06:03:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 06:03:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:22,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 06:03:22,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 06:03:22,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 06:03:22,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 06:03:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 06:03:22,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-26 06:03:22,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-10-26 06:03:22,387 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 26 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 4 states. [2020-10-26 06:03:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-26 06:03:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 06:03:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2020-10-26 06:03:22,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2020-10-26 06:03:22,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:22,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 19 letters. Loop has 4 letters. [2020-10-26 06:03:22,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:22,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 15 letters. Loop has 8 letters. [2020-10-26 06:03:22,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 06:03:22,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-10-26 06:03:22,391 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 06:03:22,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2020-10-26 06:03:22,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 06:03:22,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 06:03:22,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 06:03:22,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 06:03:22,393 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 06:03:22,393 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 06:03:22,393 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 06:03:22,393 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-26 06:03:22,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 06:03:22,393 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 06:03:22,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 06:03:22,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 06:03:22 BoogieIcfgContainer [2020-10-26 06:03:22,401 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 06:03:22,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 06:03:22,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 06:03:22,402 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 06:03:22,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:03:03" (3/4) ... [2020-10-26 06:03:22,406 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 06:03:22,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 06:03:22,408 INFO L168 Benchmark]: Toolchain (without parser) took 20312.77 ms. Allocated memory was 46.1 MB in the beginning and 211.8 MB in the end (delta: 165.7 MB). Free memory was 22.1 MB in the beginning and 133.6 MB in the end (delta: -111.5 MB). Peak memory consumption was 55.6 MB. Max. memory is 16.1 GB. [2020-10-26 06:03:22,408 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 06:03:22,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.30 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 20.8 MB in the end (delta: 678.0 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-26 06:03:22,415 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 46.1 MB. Free memory was 20.8 MB in the beginning and 29.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 06:03:22,416 INFO L168 Benchmark]: Boogie Preprocessor took 38.35 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 28.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 06:03:22,416 INFO L168 Benchmark]: RCFGBuilder took 402.21 ms. Allocated memory is still 46.1 MB. Free memory was 28.2 MB in the beginning and 21.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-10-26 06:03:22,417 INFO L168 Benchmark]: BuchiAutomizer took 19287.38 ms. Allocated memory was 46.1 MB in the beginning and 211.8 MB in the end (delta: 165.7 MB). Free memory was 21.0 MB in the beginning and 134.6 MB in the end (delta: -113.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. [2020-10-26 06:03:22,417 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 211.8 MB. Free memory was 134.6 MB in the beginning and 133.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 06:03:22,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 37.7 MB. Free memory was 24.0 MB in the beginning and 24.0 MB in the end (delta: 23.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 508.30 ms. Allocated memory is still 46.1 MB. Free memory was 21.4 MB in the beginning and 20.8 MB in the end (delta: 678.0 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.32 ms. Allocated memory is still 46.1 MB. Free memory was 20.8 MB in the beginning and 29.6 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.35 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 28.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 402.21 ms. Allocated memory is still 46.1 MB. Free memory was 28.2 MB in the beginning and 21.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 19287.38 ms. Allocated memory was 46.1 MB in the beginning and 211.8 MB in the end (delta: 165.7 MB). Free memory was 21.0 MB in the beginning and 134.6 MB in the end (delta: -113.6 MB). Peak memory consumption was 54.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.58 ms. Allocated memory is still 211.8 MB. Free memory was 134.6 MB in the beginning and 133.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function length1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + length2 and consists of 4 locations. One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * spanp and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[p] + -1 * p and consists of 3 locations. One nondeterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length2 * sizeof(char))] + -1 * spanp and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 19.2s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 16.7s. Construction of modules took 0.4s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 163 SDtfs, 275 SDslu, 357 SDs, 0 SdLazy, 360 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital251 mio100 ax108 hnf98 lsp87 ukn72 mio100 lsp46 div100 bol100 ite100 ukn100 eq185 hnf87 smp96 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...