./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array15_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array15_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00e68ac4f80be925b23bb57b8164307bcf507e35ce753b52ea66514fcb8cc207 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:15:23,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:15:23,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:15:23,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:15:23,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:15:23,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:15:23,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:15:23,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:15:23,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:15:23,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:15:23,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:15:23,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:15:23,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:15:23,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:15:23,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:15:23,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:15:23,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:15:23,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:15:23,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:15:23,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:15:23,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:15:23,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:15:23,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:15:23,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:15:23,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:15:23,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:15:23,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:15:23,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:15:23,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:15:23,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:15:23,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:15:23,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:15:23,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:15:23,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:15:23,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:15:23,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:15:23,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:15:23,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:15:23,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:15:23,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:15:23,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:15:23,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-07 01:15:23,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:15:23,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:15:23,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:15:23,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:15:23,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:15:23,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:15:23,609 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:15:23,609 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 01:15:23,609 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 01:15:23,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:15:23,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:15:23,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 01:15:23,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:15:23,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:15:23,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:15:23,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:15:23,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:15:23,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 01:15:23,613 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00e68ac4f80be925b23bb57b8164307bcf507e35ce753b52ea66514fcb8cc207 [2021-12-07 01:15:23,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:15:23,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:15:23,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:15:23,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:15:23,818 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:15:23,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-15/array15_alloca.i [2021-12-07 01:15:23,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/data/1b6b3afe4/ed78b2684f424b9f83f098e8e9662ea8/FLAGd3084a895 [2021-12-07 01:15:24,300 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:15:24,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/sv-benchmarks/c/termination-15/array15_alloca.i [2021-12-07 01:15:24,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/data/1b6b3afe4/ed78b2684f424b9f83f098e8e9662ea8/FLAGd3084a895 [2021-12-07 01:15:24,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/data/1b6b3afe4/ed78b2684f424b9f83f098e8e9662ea8 [2021-12-07 01:15:24,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:15:24,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:15:24,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:15:24,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:15:24,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:15:24,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245e664e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24, skipping insertion in model container [2021-12-07 01:15:24,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:15:24,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:15:24,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:15:24,548 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:15:24,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:15:24,595 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:15:24,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24 WrapperNode [2021-12-07 01:15:24,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:15:24,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:15:24,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:15:24,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:15:24,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,625 INFO L137 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-07 01:15:24,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:15:24,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:15:24,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:15:24,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:15:24,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:15:24,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:15:24,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:15:24,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:15:24,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (1/1) ... [2021-12-07 01:15:24,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:24,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:24,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:24,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 01:15:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:15:24,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:15:24,749 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:15:24,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:15:24,827 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:15:24,832 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:15:24,832 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 01:15:24,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:24 BoogieIcfgContainer [2021-12-07 01:15:24,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:15:24,834 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 01:15:24,834 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 01:15:24,837 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 01:15:24,837 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:15:24,837 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 01:15:24" (1/3) ... [2021-12-07 01:15:24,838 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f9ba68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:15:24, skipping insertion in model container [2021-12-07 01:15:24,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:15:24,838 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:24" (2/3) ... [2021-12-07 01:15:24,839 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f9ba68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:15:24, skipping insertion in model container [2021-12-07 01:15:24,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:15:24,839 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:24" (3/3) ... [2021-12-07 01:15:24,840 INFO L388 chiAutomizerObserver]: Analyzing ICFG array15_alloca.i [2021-12-07 01:15:24,871 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 01:15:24,872 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 01:15:24,872 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 01:15:24,872 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 01:15:24,872 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 01:15:24,872 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 01:15:24,872 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 01:15:24,872 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 01:15:24,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:24,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-07 01:15:24,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:24,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:24,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-07 01:15:24,905 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 01:15:24,906 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 01:15:24,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:24,907 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-12-07 01:15:24,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:24,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:24,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-07 01:15:24,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-07 01:15:24,918 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 11#L367true assume !(main_~length~0#1 < 1); 8#L367-2true call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 5#L369true assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 6#L370-3true [2021-12-07 01:15:24,919 INFO L793 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 13#L372true assume main_#t~mem209#1 < 0;havoc main_#t~mem209#1;call write~int(0, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 16#L370-2true main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 6#L370-3true [2021-12-07 01:15:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-12-07 01:15:24,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750214529] [2021-12-07 01:15:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:24,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-12-07 01:15:25,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:25,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135147799] [2021-12-07 01:15:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:25,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,085 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-12-07 01:15:25,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:25,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302126521] [2021-12-07 01:15:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:25,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,111 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:25,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:25,341 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:15:25,341 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:15:25,341 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:15:25,341 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:15:25,342 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:15:25,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:15:25,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:15:25,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration1_Lasso [2021-12-07 01:15:25,342 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:15:25,342 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:15:25,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:25,551 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:15:25,553 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:15:25,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 01:15:25,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:25,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:25,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:25,572 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:15:25,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 01:15:25,594 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,605 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:25,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:25,608 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 01:15:25,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 01:15:25,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:25,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:25,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:25,638 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 01:15:25,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 01:15:25,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:25,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,666 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:25,666 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:25,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 01:15:25,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 01:15:25,688 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:25,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:25,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:25,697 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 01:15:25,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 01:15:25,718 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,730 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:25,730 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:25,736 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 01:15:25,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 01:15:25,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,780 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:25,780 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:25,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:25,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-07 01:15:25,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 01:15:25,804 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:25,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:25,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:25,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:25,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:25,816 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:25,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:25,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:15:25,849 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2021-12-07 01:15:25,849 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. [2021-12-07 01:15:25,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:25,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:25,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:25,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 01:15:25,860 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:15:25,877 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-07 01:15:25,878 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:15:25,878 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~arr~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~arr~0#1.base)_1 - 4*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~arr~0#1.offset Supporting invariants [] [2021-12-07 01:15:25,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 01:15:25,917 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-07 01:15:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:25,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:15:25,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:25,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 01:15:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:25,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:15:25,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:26,011 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:15:26,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,046 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 50 transitions. Complement of second has 7 states. [2021-12-07 01:15:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 01:15:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-12-07 01:15:26,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-07 01:15:26,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-07 01:15:26,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-07 01:15:26,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-12-07 01:15:26,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2021-12-07 01:15:26,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-07 01:15:26,059 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-07 01:15:26,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-12-07 01:15:26,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:15:26,060 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-07 01:15:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-12-07 01:15:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-07 01:15:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-12-07 01:15:26,077 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-07 01:15:26,077 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-07 01:15:26,077 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 01:15:26,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-12-07 01:15:26,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:26,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:26,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:26,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:15:26,078 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 114#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 121#L367 assume !(main_~length~0#1 < 1); 115#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 116#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 117#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 118#L370-4 main_~j~0#1 := 0; 119#L378-2 [2021-12-07 01:15:26,078 INFO L793 eck$LassoCheckResult]: Loop: 119#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 120#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 119#L378-2 [2021-12-07 01:15:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-12-07 01:15:26,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843818160] [2021-12-07 01:15:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:26,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:15:26,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843818160] [2021-12-07 01:15:26,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843818160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:15:26,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:15:26,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:15:26,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376197277] [2021-12-07 01:15:26,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:15:26,116 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 01:15:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2021-12-07 01:15:26,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889370853] [2021-12-07 01:15:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,121 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:15:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:15:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:15:26,161 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:15:26,180 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-12-07 01:15:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:15:26,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-12-07 01:15:26,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2021-12-07 01:15:26,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-07 01:15:26,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-07 01:15:26,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-07 01:15:26,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-07 01:15:26,182 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-07 01:15:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-07 01:15:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-12-07 01:15:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-07 01:15:26,183 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-07 01:15:26,183 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-07 01:15:26,184 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 01:15:26,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-07 01:15:26,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:26,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:26,184 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:26,184 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:15:26,185 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 154#L367 assume !(main_~length~0#1 < 1); 148#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 149#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 150#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 155#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 157#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 156#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 151#L370-4 main_~j~0#1 := 0; 152#L378-2 [2021-12-07 01:15:26,185 INFO L793 eck$LassoCheckResult]: Loop: 152#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 153#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 152#L378-2 [2021-12-07 01:15:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-12-07 01:15:26,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969924188] [2021-12-07 01:15:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,195 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2021-12-07 01:15:26,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577762777] [2021-12-07 01:15:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,210 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2021-12-07 01:15:26,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567257171] [2021-12-07 01:15:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,228 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,243 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,407 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:15:26,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:15:26,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:15:26,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:15:26,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:15:26,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:15:26,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:15:26,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration3_Lasso [2021-12-07 01:15:26,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:15:26,407 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:15:26,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:26,613 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:15:26,613 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:15:26,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 01:15:26,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:26,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:26,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:26,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:26,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:26,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:26,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:26,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:26,627 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:26,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-07 01:15:26,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 01:15:26,649 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:26,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:26,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:26,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:26,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:26,657 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:26,657 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:26,657 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:26,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:26,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 01:15:26,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,679 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 01:15:26,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:26,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:26,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:26,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:26,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:26,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:26,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:26,694 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:26,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-07 01:15:26,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 01:15:26,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:26,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:26,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:26,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:26,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:26,731 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:26,732 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:26,741 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:15:26,762 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2021-12-07 01:15:26,762 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 16 variables to zero. [2021-12-07 01:15:26,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,763 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 01:15:26,764 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:15:26,774 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-07 01:15:26,774 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:15:26,774 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-12-07 01:15:26,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 01:15:26,798 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-12-07 01:15:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:26,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:15:26,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:26,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:15:26,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:26,836 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:15:26,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,845 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 22 transitions. Complement of second has 5 states. [2021-12-07 01:15:26,845 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 [2021-12-07 01:15:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-12-07 01:15:26,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-07 01:15:26,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-12-07 01:15:26,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-07 01:15:26,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:26,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-12-07 01:15:26,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2021-12-07 01:15:26,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-07 01:15:26,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-07 01:15:26,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-12-07 01:15:26,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:15:26,849 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-07 01:15:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-12-07 01:15:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-07 01:15:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-12-07 01:15:26,850 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-07 01:15:26,850 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-07 01:15:26,850 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 01:15:26,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-12-07 01:15:26,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:26,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:26,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:26,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:26,851 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:15:26,851 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 244#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 254#L367 assume !(main_~length~0#1 < 1); 245#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 246#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 247#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 255#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 257#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 256#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 248#L370-4 main_~j~0#1 := 0; 249#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 250#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 251#L378-2 [2021-12-07 01:15:26,851 INFO L793 eck$LassoCheckResult]: Loop: 251#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 258#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 251#L378-2 [2021-12-07 01:15:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2021-12-07 01:15:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517244702] [2021-12-07 01:15:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,863 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,877 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2021-12-07 01:15:26,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841966313] [2021-12-07 01:15:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,881 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:26,886 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2021-12-07 01:15:26,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:26,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775695690] [2021-12-07 01:15:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:26,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:15:26,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775695690] [2021-12-07 01:15:26,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775695690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:15:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796455167] [2021-12-07 01:15:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:26,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:15:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:26,966 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:15:26,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 01:15:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:26,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:15:26,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:27,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:15:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:27,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796455167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:15:27,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:15:27,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2021-12-07 01:15:27,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506317140] [2021-12-07 01:15:27,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:15:27,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:15:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 01:15:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-07 01:15:27,108 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:15:27,231 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2021-12-07 01:15:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:15:27,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2021-12-07 01:15:27,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:27,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 21 states and 28 transitions. [2021-12-07 01:15:27,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-07 01:15:27,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-07 01:15:27,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2021-12-07 01:15:27,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:15:27,235 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2021-12-07 01:15:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2021-12-07 01:15:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-12-07 01:15:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-12-07 01:15:27,236 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-12-07 01:15:27,236 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-12-07 01:15:27,236 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-07 01:15:27,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2021-12-07 01:15:27,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:27,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:27,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:27,237 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:27,237 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:15:27,237 INFO L791 eck$LassoCheckResult]: Stem: 402#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 403#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 413#L367 assume !(main_~length~0#1 < 1); 404#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 405#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 406#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 414#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 419#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 415#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 416#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 417#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 420#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 407#L370-4 main_~j~0#1 := 0; 408#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 409#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 410#L378-2 [2021-12-07 01:15:27,237 INFO L793 eck$LassoCheckResult]: Loop: 410#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 418#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 410#L378-2 [2021-12-07 01:15:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1238701285, now seen corresponding path program 2 times [2021-12-07 01:15:27,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:27,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077994295] [2021-12-07 01:15:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:27,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2021-12-07 01:15:27,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:27,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599420622] [2021-12-07 01:15:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:27,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,273 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash -685992546, now seen corresponding path program 2 times [2021-12-07 01:15:27,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932610684] [2021-12-07 01:15:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:27,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,305 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:27,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-07 01:15:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:27,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:27,571 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:15:27,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:15:27,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:15:27,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:15:27,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:15:27,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:15:27,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:15:27,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: array15_alloca.i_Iteration5_Lasso [2021-12-07 01:15:27,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:15:27,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:15:27,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:15:27,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:15:27,820 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:15:27,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 01:15:27,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:27,832 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:27,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:27,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:27,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:27,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:27,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:27,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:27,834 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:27,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-07 01:15:27,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,853 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 01:15:27,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:27,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:27,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:27,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:27,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:27,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:27,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:27,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:27,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:27,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-07 01:15:27,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,882 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 01:15:27,883 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:27,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:27,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:27,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:27,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:27,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:27,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:27,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:27,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:27,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-07 01:15:27,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,911 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 01:15:27,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:27,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:27,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:27,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:27,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:27,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:27,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:27,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:27,921 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:27,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-07 01:15:27,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,940 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-07 01:15:27,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:27,964 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:27,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:27,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:27,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:27,966 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:27,966 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:27,969 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:27,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-07 01:15:27,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:27,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:27,996 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:27,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-07 01:15:27,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:28,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:28,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:28,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:28,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:28,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:28,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:28,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:28,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:28,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-07 01:15:28,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:28,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:28,026 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:28,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-07 01:15:28,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:28,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:28,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:15:28,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:28,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:28,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:28,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:15:28,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:15:28,036 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:15:28,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-07 01:15:28,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:28,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:28,055 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:28,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-07 01:15:28,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:15:28,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:15:28,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:15:28,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:15:28,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:15:28,068 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:15:28,068 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-07 01:15:28,078 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:15:28,087 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-07 01:15:28,087 INFO L444 ModelExtractionUtils]: 12 out of 25 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-12-07 01:15:28,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:15:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:28,088 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:15:28,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-07 01:15:28,089 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:15:28,097 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-07 01:15:28,098 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:15:28,098 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2021-12-07 01:15:28,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-07 01:15:28,124 INFO L297 tatePredicateManager]: 5 out of 5 supporting invariants were superfluous and have been removed [2021-12-07 01:15:28,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:28,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:15:28,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:28,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:15:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:28,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-07 01:15:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:28,178 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:15:28,178 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:28,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 31 transitions. Complement of second has 5 states. [2021-12-07 01:15:28,187 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 [2021-12-07 01:15:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-12-07 01:15:28,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 2 letters. [2021-12-07 01:15:28,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:28,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 17 letters. Loop has 2 letters. [2021-12-07 01:15:28,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:28,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2021-12-07 01:15:28,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:15:28,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2021-12-07 01:15:28,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:28,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 31 transitions. [2021-12-07 01:15:28,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-07 01:15:28,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-07 01:15:28,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2021-12-07 01:15:28,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:15:28,191 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-12-07 01:15:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2021-12-07 01:15:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-07 01:15:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-12-07 01:15:28,193 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-12-07 01:15:28,193 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-12-07 01:15:28,193 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-07 01:15:28,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 31 transitions. [2021-12-07 01:15:28,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:15:28,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:28,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:28,195 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:28,195 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:15:28,195 INFO L791 eck$LassoCheckResult]: Stem: 536#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 537#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 547#L367 assume !(main_~length~0#1 < 1); 538#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 539#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 540#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 548#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 551#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 549#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 550#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 555#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 554#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 541#L370-4 main_~j~0#1 := 0; 542#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 543#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 544#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 556#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 552#L378-2 [2021-12-07 01:15:28,195 INFO L793 eck$LassoCheckResult]: Loop: 552#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 553#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 552#L378-2 [2021-12-07 01:15:28,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash -685992544, now seen corresponding path program 3 times [2021-12-07 01:15:28,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585692422] [2021-12-07 01:15:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,216 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2021-12-07 01:15:28,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500325877] [2021-12-07 01:15:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,219 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:28,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2108837149, now seen corresponding path program 3 times [2021-12-07 01:15:28,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95891880] [2021-12-07 01:15:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:15:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:28,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:15:28,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95891880] [2021-12-07 01:15:28,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95891880] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:15:28,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998550746] [2021-12-07 01:15:28,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 01:15:28,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:15:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:15:28,317 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:15:28,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 01:15:28,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-07 01:15:28,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:15:28,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 01:15:28,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:15:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:28,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:15:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:15:28,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998550746] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:15:28,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:15:28,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2021-12-07 01:15:28,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073217981] [2021-12-07 01:15:28,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:15:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:15:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-07 01:15:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-12-07 01:15:28,489 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. cyclomatic complexity: 12 Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:15:28,604 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2021-12-07 01:15:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 01:15:28,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2021-12-07 01:15:28,606 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2021-12-07 01:15:28,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2021-12-07 01:15:28,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-07 01:15:28,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-12-07 01:15:28,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2021-12-07 01:15:28,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:15:28,607 INFO L681 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2021-12-07 01:15:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2021-12-07 01:15:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2021-12-07 01:15:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:15:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2021-12-07 01:15:28,610 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-12-07 01:15:28,610 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2021-12-07 01:15:28,610 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-07 01:15:28,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2021-12-07 01:15:28,611 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-07 01:15:28,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:15:28,611 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:15:28,611 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:15:28,611 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-07 01:15:28,611 INFO L791 eck$LassoCheckResult]: Stem: 750#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 751#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet205#1, main_#t~malloc206#1.base, main_#t~malloc206#1.offset, main_#t~nondet208#1, main_#t~mem209#1, main_#t~post207#1, main_#t~mem210#1, main_#t~post211#1, main_#t~post212#1, main_~i~0#1, main_~j~0#1, main_~length~0#1, main_~arr~0#1.base, main_~arr~0#1.offset;havoc main_~i~0#1;havoc main_~j~0#1;main_~length~0#1 := main_#t~nondet205#1;havoc main_#t~nondet205#1; 761#L367 assume !(main_~length~0#1 < 1); 752#L367-2 call main_#t~malloc206#1.base, main_#t~malloc206#1.offset := #Ultimate.allocOnStack(4 * main_~length~0#1);main_~arr~0#1.base, main_~arr~0#1.offset := main_#t~malloc206#1.base, main_#t~malloc206#1.offset; 753#L369 assume !(main_~arr~0#1.base == 0 && main_~arr~0#1.offset == 0);main_~i~0#1 := 0; 754#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 762#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 773#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 763#L370-3 assume !!(main_~i~0#1 < main_~length~0#1);call write~int(main_#t~nondet208#1, main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4);havoc main_#t~nondet208#1;call main_#t~mem209#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~i~0#1, 4); 764#L372 assume !(main_#t~mem209#1 < 0);havoc main_#t~mem209#1; 771#L370-2 main_#t~post207#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post207#1;havoc main_#t~post207#1; 772#L370-3 assume !(main_~i~0#1 < main_~length~0#1); 755#L370-4 main_~j~0#1 := 0; 756#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 775#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 774#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 759#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 760#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 785#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 783#L378-2 [2021-12-07 01:15:28,611 INFO L793 eck$LassoCheckResult]: Loop: 783#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 780#L378 assume main_#t~mem210#1 > 0;havoc main_#t~mem210#1;main_#t~post211#1 := main_~j~0#1;main_~j~0#1 := main_#t~post211#1 - 1;havoc main_#t~post211#1; 767#L378-2 assume !!(0 <= main_~j~0#1 && main_~j~0#1 < main_~length~0#1);call main_#t~mem210#1 := read~int(main_~arr~0#1.base, main_~arr~0#1.offset + 4 * main_~j~0#1, 4); 768#L378 assume !(main_#t~mem210#1 > 0);havoc main_#t~mem210#1;main_#t~post212#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post212#1;havoc main_#t~post212#1; 783#L378-2 [2021-12-07 01:15:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2108839069, now seen corresponding path program 4 times [2021-12-07 01:15:28,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849638791] [2021-12-07 01:15:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,622 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:28,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2021-12-07 01:15:28,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670090190] [2021-12-07 01:15:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,635 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,639 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:15:28,639 INFO L85 PathProgramCache]: Analyzing trace with hash 50792363, now seen corresponding path program 5 times [2021-12-07 01:15:28,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:15:28,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99581630] [2021-12-07 01:15:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:15:28,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:15:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,651 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:15:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:15:28,663 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:15:29,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 01:15:29 BoogieIcfgContainer [2021-12-07 01:15:29,018 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-07 01:15:29,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:15:29,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:15:29,018 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:15:29,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:24" (3/4) ... [2021-12-07 01:15:29,020 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-07 01:15:29,042 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:15:29,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:15:29,043 INFO L158 Benchmark]: Toolchain (without parser) took 4721.67ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 54.8MB in the beginning and 96.4MB in the end (delta: -41.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,043 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 92.3MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:15:29,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.46ms. Allocated memory is still 92.3MB. Free memory was 54.5MB in the beginning and 58.6MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.15ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 56.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,044 INFO L158 Benchmark]: Boogie Preprocessor took 16.13ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 55.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:15:29,044 INFO L158 Benchmark]: RCFGBuilder took 190.82ms. Allocated memory is still 92.3MB. Free memory was 55.5MB in the beginning and 45.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,045 INFO L158 Benchmark]: BuchiAutomizer took 4183.33ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 45.8MB in the beginning and 98.5MB in the end (delta: -52.7MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,045 INFO L158 Benchmark]: Witness Printer took 24.84ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:15:29,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 92.3MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.46ms. Allocated memory is still 92.3MB. Free memory was 54.5MB in the beginning and 58.6MB in the end (delta: -4.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.15ms. Allocated memory is still 92.3MB. Free memory was 58.6MB in the beginning and 56.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.13ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 55.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 190.82ms. Allocated memory is still 92.3MB. Free memory was 55.5MB in the beginning and 45.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4183.33ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 45.8MB in the beginning and 98.5MB in the end (delta: -52.7MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Witness Printer took 24.84ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 96.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -4 * i + unknown-#length-unknown[arr] + -1 * arr and consists of 5 locations. One deterministic module has affine ranking function 2 * j + 1 and consists of 3 locations. One deterministic module has affine ranking function 2 * j + 1 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 20 locations. The remainder module has 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 6. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 64 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital127 mio100 ax100 hnf99 lsp94 ukn85 mio100 lsp58 div100 bol100 ite100 ukn100 eq164 hnf92 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {j=1, arr=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54ef2fa1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b44734=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b44734=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@11f24656=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5156b0cf=0, length=2, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6bf3e643=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@13d889cc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@31907d45=0, arr=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c992a7d=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i 0) [L381] j++ [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND TRUE arr[j] > 0 [L379] j-- [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND FALSE !(arr[j] > 0) [L381] j++ Loop: [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND TRUE arr[j] > 0 [L379] j-- [L377] COND TRUE 0 <= j && j < length [L378] EXPR arr[j] [L378] COND FALSE !(arr[j] > 0) [L381] j++ End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-07 01:15:29,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-07 01:15:29,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 01:15:29,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3605c9a-dfeb-49da-a4dd-20715d9d47b9/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)