./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD --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 70a086934e1e89be24ca903ac58dab57bc69cc71f8647f560bc8e8c5be636e6c ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:53:37,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:53:37,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:53:37,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:53:37,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:53:37,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:53:37,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:53:37,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:53:37,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:53:37,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:53:37,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:53:37,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:53:37,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:53:37,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:53:37,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:53:38,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:53:38,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:53:38,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:53:38,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:53:38,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:53:38,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:53:38,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:53:38,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:53:38,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:53:38,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:53:38,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:53:38,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:53:38,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:53:38,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:53:38,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:53:38,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:53:38,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:53:38,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:53:38,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:53:38,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:53:38,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:53:38,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:53:38,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:53:38,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:53:38,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:53:38,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:53:38,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 22:53:38,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:53:38,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:53:38,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:53:38,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:53:38,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:53:38,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:53:38,141 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:53:38,141 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:53:38,142 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:53:38,142 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:53:38,144 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:53:38,144 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:53:38,144 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:53:38,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:53:38,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:53:38,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:53:38,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:53:38,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:53:38,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:53:38,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:53:38,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:53:38,148 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:53:38,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:53:38,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:53:38,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:53:38,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:53:38,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:53:38,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:53:38,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:53:38,155 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:53:38,155 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_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a086934e1e89be24ca903ac58dab57bc69cc71f8647f560bc8e8c5be636e6c [2021-10-28 22:53:38,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:53:38,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:53:38,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:53:38,561 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:53:38,562 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:53:38,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i [2021-10-28 22:53:38,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/data/b008d9bcd/af59da2a174c4e559dade2a654e05f92/FLAG469a31cf5 [2021-10-28 22:53:39,311 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:53:39,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i [2021-10-28 22:53:39,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/data/b008d9bcd/af59da2a174c4e559dade2a654e05f92/FLAG469a31cf5 [2021-10-28 22:53:39,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/data/b008d9bcd/af59da2a174c4e559dade2a654e05f92 [2021-10-28 22:53:39,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:53:39,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:53:39,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:39,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:53:39,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:53:39,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:39" (1/1) ... [2021-10-28 22:53:39,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265295a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:39, skipping insertion in model container [2021-10-28 22:53:39,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:39" (1/1) ... [2021-10-28 22:53:39,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:53:39,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:53:40,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:40,202 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:53:40,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:53:40,351 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:53:40,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40 WrapperNode [2021-10-28 22:53:40,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:53:40,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:40,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:53:40,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:53:40,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:53:40,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:53:40,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:53:40,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:53:40,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:53:40,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:53:40,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:53:40,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:53:40,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (1/1) ... [2021-10-28 22:53:40,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:40,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:40,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:53:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:53:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:53:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:53:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:53:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:53:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:53:40,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:53:40,973 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 22:53:40,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:40 BoogieIcfgContainer [2021-10-28 22:53:40,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:53:40,977 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:53:40,977 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:53:40,980 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:53:40,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:40,982 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:53:39" (1/3) ... [2021-10-28 22:53:40,990 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66127630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:40, skipping insertion in model container [2021-10-28 22:53:40,990 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:40,990 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:40" (2/3) ... [2021-10-28 22:53:40,991 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66127630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:53:40, skipping insertion in model container [2021-10-28 22:53:40,991 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:53:40,991 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:40" (3/3) ... [2021-10-28 22:53:40,993 INFO L389 chiAutomizerObserver]: Analyzing ICFG cstrncmp_reverse_alloca.i [2021-10-28 22:53:41,095 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:53:41,096 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:53:41,096 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:53:41,096 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:53:41,096 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:53:41,096 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:53:41,097 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:53:41,097 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:53:41,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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) [2021-10-28 22:53:41,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:41,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:41,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:41,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:41,160 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 22:53:41,161 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:53:41,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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) [2021-10-28 22:53:41,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:41,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:41,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:41,166 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:41,166 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 22:53:41,201 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet216, main_#t~nondet217, main_#t~malloc218.base, main_#t~malloc218.offset, main_#t~malloc219.base, main_#t~malloc219.offset, main_#t~nondet220, main_#t~ret221, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet216;havoc main_#t~nondet216;main_~length2~0 := main_#t~nondet217;havoc main_#t~nondet217; 19#L382true assume !(main_~length1~0 < 1); 15#L382-2true assume !(main_~length2~0 < 1); 5#L385-1true call main_#t~malloc218.base, main_#t~malloc218.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc218.base, main_#t~malloc218.offset;call main_#t~malloc219.base, main_#t~malloc219.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc219.base, main_#t~malloc219.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_#t~nondet220;havoc cstrncmp_#res;havoc cstrncmp_#t~mem209, cstrncmp_#t~short210, cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset, cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset, cstrncmp_#t~post205, cstrncmp_#t~mem206, cstrncmp_#t~mem207, cstrncmp_#t~short208, cstrncmp_#t~mem213, cstrncmp_#t~mem214, cstrncmp_#t~ite215, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n, cstrncmp_~uc1~0, cstrncmp_~uc2~0;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n;havoc cstrncmp_~uc1~0;havoc cstrncmp_~uc2~0; 12#L367true assume !(0 == cstrncmp_~n); 10#L369-5true [2021-10-28 22:53:41,215 INFO L793 eck$LassoCheckResult]: Loop: 10#L369-5true cstrncmp_#t~post205 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post205 - 1;cstrncmp_#t~short208 := cstrncmp_#t~post205 > 0; 16#L369-1true assume cstrncmp_#t~short208;call cstrncmp_#t~mem206 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);call cstrncmp_#t~mem207 := read~int(cstrncmp_~s2.base, cstrncmp_~s2.offset, 1);cstrncmp_#t~short208 := cstrncmp_#t~mem206 == cstrncmp_#t~mem207; 9#L369-3true assume !!cstrncmp_#t~short208;havoc cstrncmp_#t~post205;havoc cstrncmp_#t~mem206;havoc cstrncmp_#t~mem207;havoc cstrncmp_#t~short208;cstrncmp_#t~short210 := 0 == cstrncmp_~n; 7#L370true assume cstrncmp_#t~short210; 18#L370-2true assume !cstrncmp_#t~short210;havoc cstrncmp_#t~mem209;havoc cstrncmp_#t~short210;cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset - 1;havoc cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset;cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset - 1;havoc cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset; 10#L369-5true [2021-10-28 22:53:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 1 times [2021-10-28 22:53:41,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:41,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272286895] [2021-10-28 22:53:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:41,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,411 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,502 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:41,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash 52587176, now seen corresponding path program 1 times [2021-10-28 22:53:41,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:41,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842355436] [2021-10-28 22:53:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:41,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:41,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:53:41,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842355436] [2021-10-28 22:53:41,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842355436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:53:41,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:53:41,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 22:53:41,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898438221] [2021-10-28 22:53:41,591 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:53:41,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:53:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:53:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:53:41,613 INFO L87 Difference]: Start difference. First operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-28 22:53:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:53:41,641 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2021-10-28 22:53:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:53:41,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2021-10-28 22:53:41,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:41,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 14 transitions. [2021-10-28 22:53:41,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-28 22:53:41,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-28 22:53:41,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2021-10-28 22:53:41,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:53:41,654 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-28 22:53:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2021-10-28 22:53:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 22:53:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:53:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-28 22:53:41,685 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-28 22:53:41,685 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-28 22:53:41,686 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:53:41,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2021-10-28 22:53:41,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 22:53:41,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:53:41,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:53:41,688 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:53:41,688 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 22:53:41,689 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 49#L-1 havoc main_#res;havoc main_#t~nondet216, main_#t~nondet217, main_#t~malloc218.base, main_#t~malloc218.offset, main_#t~malloc219.base, main_#t~malloc219.offset, main_#t~nondet220, main_#t~ret221, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet216;havoc main_#t~nondet216;main_~length2~0 := main_#t~nondet217;havoc main_#t~nondet217; 55#L382 assume !(main_~length1~0 < 1); 56#L382-2 assume !(main_~length2~0 < 1); 50#L385-1 call main_#t~malloc218.base, main_#t~malloc218.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc218.base, main_#t~malloc218.offset;call main_#t~malloc219.base, main_#t~malloc219.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc219.base, main_#t~malloc219.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1);cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset, cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset, cstrncmp_#in~n := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset, main_#t~nondet220;havoc cstrncmp_#res;havoc cstrncmp_#t~mem209, cstrncmp_#t~short210, cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset, cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset, cstrncmp_#t~post205, cstrncmp_#t~mem206, cstrncmp_#t~mem207, cstrncmp_#t~short208, cstrncmp_#t~mem213, cstrncmp_#t~mem214, cstrncmp_#t~ite215, cstrncmp_~s1.base, cstrncmp_~s1.offset, cstrncmp_~s2.base, cstrncmp_~s2.offset, cstrncmp_~n, cstrncmp_~uc1~0, cstrncmp_~uc2~0;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#in~s1.base, cstrncmp_#in~s1.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#in~s2.base, cstrncmp_#in~s2.offset;cstrncmp_~n := cstrncmp_#in~n;havoc cstrncmp_~uc1~0;havoc cstrncmp_~uc2~0; 51#L367 assume !(0 == cstrncmp_~n); 52#L369-5 [2021-10-28 22:53:41,689 INFO L793 eck$LassoCheckResult]: Loop: 52#L369-5 cstrncmp_#t~post205 := cstrncmp_~n;cstrncmp_~n := cstrncmp_#t~post205 - 1;cstrncmp_#t~short208 := cstrncmp_#t~post205 > 0; 53#L369-1 assume cstrncmp_#t~short208;call cstrncmp_#t~mem206 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);call cstrncmp_#t~mem207 := read~int(cstrncmp_~s2.base, cstrncmp_~s2.offset, 1);cstrncmp_#t~short208 := cstrncmp_#t~mem206 == cstrncmp_#t~mem207; 46#L369-3 assume !!cstrncmp_#t~short208;havoc cstrncmp_#t~post205;havoc cstrncmp_#t~mem206;havoc cstrncmp_#t~mem207;havoc cstrncmp_#t~short208;cstrncmp_#t~short210 := 0 == cstrncmp_~n; 47#L370 assume !cstrncmp_#t~short210;call cstrncmp_#t~mem209 := read~int(cstrncmp_~s1.base, cstrncmp_~s1.offset, 1);cstrncmp_#t~short210 := 0 == cstrncmp_#t~mem209; 54#L370-2 assume !cstrncmp_#t~short210;havoc cstrncmp_#t~mem209;havoc cstrncmp_#t~short210;cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset := cstrncmp_~s1.base, cstrncmp_~s1.offset;cstrncmp_~s1.base, cstrncmp_~s1.offset := cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset - 1;havoc cstrncmp_#t~post211.base, cstrncmp_#t~post211.offset;cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset := cstrncmp_~s2.base, cstrncmp_~s2.offset;cstrncmp_~s2.base, cstrncmp_~s2.offset := cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset - 1;havoc cstrncmp_#t~post212.base, cstrncmp_#t~post212.offset; 52#L369-5 [2021-10-28 22:53:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 2 times [2021-10-28 22:53:41,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:41,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610937564] [2021-10-28 22:53:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:41,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,719 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 52587238, now seen corresponding path program 1 times [2021-10-28 22:53:41,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:41,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598919798] [2021-10-28 22:53:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:41,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,768 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2120298631, now seen corresponding path program 1 times [2021-10-28 22:53:41,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:53:41,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605365477] [2021-10-28 22:53:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:53:41,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:53:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,838 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:53:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:53:41,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:53:43,324 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 22:53:43,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 22:53:43,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 22:53:43,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 22:53:43,325 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 22:53:43,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:43,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 22:53:43,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 22:53:43,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncmp_reverse_alloca.i_Iteration2_Lasso [2021-10-28 22:53:43,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 22:53:43,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 22:53:43,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:43,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 22:53:44,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 22:53:44,727 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 22:53:44,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,740 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 [2021-10-28 22:53:44,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 22:53:44,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:44,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 22:53:44,818 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 [2021-10-28 22:53:44,827 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 22:53:44,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 22:53:44,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 22:53:44,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 22:53:44,845 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 22:53:44,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:44,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:44,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:44,920 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 [2021-10-28 22:53:44,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 22:53:44,933 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2021-10-28 22:53:44,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 22:53:44,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 22:53:44,948 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-28 22:53:44,950 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 22:53:44,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 22:53:44,982 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 22:53:45,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 22:53:45,034 INFO L444 ModelExtractionUtils]: 9 out of 13 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-10-28 22:53:45,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:53:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:53:45,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:53:45,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 22:53:45,104 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 22:53:45,157 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-10-28 22:53:45,158 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 22:53:45,158 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrncmp_~n) = 1*ULTIMATE.start_cstrncmp_~n Supporting invariants [] [2021-10-28 22:53:45,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:45,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:53:45,327 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2021-10-28 22:53:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:53:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 22:53:45,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:53:45,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 22:53:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:53:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:53:45,590 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 22:53:45,591 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 22:53:45,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 21 states and 26 transitions. Complement of second has 6 states. [2021-10-28 22:53:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 22:53:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-28 22:53:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-28 22:53:45,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2021-10-28 22:53:45,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2021-10-28 22:53:45,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2021-10-28 22:53:45,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 22:53:45,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2021-10-28 22:53:45,675 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:53:45,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2021-10-28 22:53:45,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 22:53:45,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 22:53:45,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 22:53:45,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:53:45,676 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:53:45,676 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:53:45,676 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:53:45,677 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:53:45,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:53:45,681 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 22:53:45,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 22:53:45,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:53:45 BoogieIcfgContainer [2021-10-28 22:53:45,689 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:53:45,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:53:45,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:53:45,690 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:53:45,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:53:40" (3/4) ... [2021-10-28 22:53:45,701 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 22:53:45,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:53:45,704 INFO L168 Benchmark]: Toolchain (without parser) took 6092.16 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 52.9 MB in the beginning and 91.4 MB in the end (delta: -38.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:45,706 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:45,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.14 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 81.9 MB in the end (delta: -29.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:45,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.50 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:45,716 INFO L168 Benchmark]: Boogie Preprocessor took 56.05 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 78.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:45,717 INFO L168 Benchmark]: RCFGBuilder took 451.64 ms. Allocated memory is still 113.2 MB. Free memory was 78.6 MB in the beginning and 67.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:45,717 INFO L168 Benchmark]: BuchiAutomizer took 4712.12 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 67.3 MB in the beginning and 92.6 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:53:45,718 INFO L168 Benchmark]: Witness Printer took 11.71 ms. Allocated memory is still 136.3 MB. Free memory was 92.3 MB in the beginning and 91.4 MB in the end (delta: 895.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:53:45,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 58.1 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.14 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 81.9 MB in the end (delta: -29.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.50 ms. Allocated memory is still 113.2 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.05 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 78.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 451.64 ms. Allocated memory is still 113.2 MB. Free memory was 78.6 MB in the beginning and 67.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4712.12 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 67.3 MB in the beginning and 92.6 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 11.71 ms. Allocated memory is still 136.3 MB. Free memory was 92.3 MB in the beginning and 91.4 MB in the end (delta: 895.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 4.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 12 SDslu, 23 SDs, 0 SdLazy, 15 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital242 mio100 ax100 hnf100 lsp88 ukn87 mio100 lsp51 div100 bol100 ite100 ukn100 eq194 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 265ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 22:53:45,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac7c6e2-47e0-4598-ab76-cd6c8d6a3011/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...