./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc --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 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:43:15,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:15,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:15,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:15,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:15,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:15,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:15,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:15,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:15,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:15,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:15,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:15,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:15,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:15,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:15,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:15,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:15,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:15,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:15,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:15,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:15,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:15,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:15,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:15,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:15,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:15,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:15,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:15,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:15,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:15,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:15,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:15,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:15,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:15,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:15,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:15,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:15,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:15,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:15,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:15,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:15,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:43:15,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:15,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:15,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:15,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:15,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:15,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:15,875 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:15,875 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:43:15,875 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:43:15,886 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:43:15,887 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:43:15,887 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:43:15,888 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:43:15,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:15,888 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:43:15,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:15,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:15,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:43:15,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:43:15,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:43:15,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:15,890 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:43:15,890 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:15,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:43:15,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:15,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:15,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:15,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:15,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:43:15,893 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_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a086934e1e89be24ca903ac58dab57bc69cc71f8647f560bc8e8c5be636e6c [2022-11-02 20:43:16,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:16,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:16,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:16,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:16,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:16,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i [2022-11-02 20:43:16,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/data/271c34594/b179f8b2905544a780530ade6db3ac7e/FLAG13f72036e [2022-11-02 20:43:16,926 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:16,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/sv-benchmarks/c/termination-15/cstrncmp_reverse_alloca.i [2022-11-02 20:43:16,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/data/271c34594/b179f8b2905544a780530ade6db3ac7e/FLAG13f72036e [2022-11-02 20:43:17,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/data/271c34594/b179f8b2905544a780530ade6db3ac7e [2022-11-02 20:43:17,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:17,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:17,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:17,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:17,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:17,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244e46e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17, skipping insertion in model container [2022-11-02 20:43:17,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:17,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:17,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:17,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:43:17,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:43:17,748 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:43:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17 WrapperNode [2022-11-02 20:43:17,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:17,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:17,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:43:17,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:43:17,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,791 INFO L138 Inliner]: procedures = 152, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2022-11-02 20:43:17,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:43:17,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:43:17,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:43:17,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:43:17,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:43:17,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:43:17,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:43:17,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:43:17,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (1/1) ... [2022-11-02 20:43:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:17,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:17,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:17,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:43:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:43:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:43:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:43:17,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:43:17,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:43:17,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:43:18,030 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:43:18,032 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:43:18,273 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:43:18,280 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:43:18,280 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:43:18,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:18 BoogieIcfgContainer [2022-11-02 20:43:18,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:43:18,284 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:43:18,284 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:43:18,303 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:43:18,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:43:18,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:43:17" (1/3) ... [2022-11-02 20:43:18,305 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ca5b67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:43:18, skipping insertion in model container [2022-11-02 20:43:18,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:43:18,305 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:17" (2/3) ... [2022-11-02 20:43:18,306 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ca5b67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:43:18, skipping insertion in model container [2022-11-02 20:43:18,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:43:18,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:18" (3/3) ... [2022-11-02 20:43:18,308 INFO L332 chiAutomizerObserver]: Analyzing ICFG cstrncmp_reverse_alloca.i [2022-11-02 20:43:18,412 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:43:18,412 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:43:18,413 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:43:18,413 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:43:18,413 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:43:18,413 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:43:18,413 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:43:18,414 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:43:18,421 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) [2022-11-02 20:43:18,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:43:18,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:43:18,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:43:18,463 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:18,463 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-02 20:43:18,463 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:43:18,464 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) [2022-11-02 20:43:18,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:43:18,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:43:18,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:43:18,468 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:18,469 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-02 20:43:18,479 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet216#1, main_#t~nondet217#1, main_#t~malloc218#1.base, main_#t~malloc218#1.offset, main_#t~malloc219#1.base, main_#t~malloc219#1.offset, main_#t~nondet220#1, main_#t~ret221#1, main_~length1~0#1, main_~length2~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset;main_~length1~0#1 := main_#t~nondet216#1;havoc main_#t~nondet216#1;main_~length2~0#1 := main_#t~nondet217#1;havoc main_#t~nondet217#1; 18#L382true assume !(main_~length1~0#1 < 1); 14#L382-2true assume !(main_~length2~0#1 < 1); 4#L385-1true call main_#t~malloc218#1.base, main_#t~malloc218#1.offset := #Ultimate.allocOnStack(main_~length1~0#1 % 18446744073709551616);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc218#1.base, main_#t~malloc218#1.offset;call main_#t~malloc219#1.base, main_#t~malloc219#1.offset := #Ultimate.allocOnStack(main_~length2~0#1 % 18446744073709551616);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_#t~malloc219#1.base, main_#t~malloc219#1.offset;call write~int(0, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, 1);call write~int(0, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, 1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - 1);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset + (main_~length2~0#1 - 1);assume { :begin_inline_cstrncmp } true;cstrncmp_#in~s1#1.base, cstrncmp_#in~s1#1.offset, cstrncmp_#in~s2#1.base, cstrncmp_#in~s2#1.offset, cstrncmp_#in~n#1 := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, main_#t~nondet220#1;havoc cstrncmp_#res#1;havoc cstrncmp_#t~mem209#1, cstrncmp_#t~short210#1, cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset, cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset, cstrncmp_#t~post205#1, cstrncmp_#t~mem206#1, cstrncmp_#t~mem207#1, cstrncmp_#t~short208#1, cstrncmp_#t~mem213#1, cstrncmp_#t~mem214#1, cstrncmp_#t~ite215#1, cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset, cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset, cstrncmp_~n#1, cstrncmp_~uc1~0#1, cstrncmp_~uc2~0#1;cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset := cstrncmp_#in~s1#1.base, cstrncmp_#in~s1#1.offset;cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset := cstrncmp_#in~s2#1.base, cstrncmp_#in~s2#1.offset;cstrncmp_~n#1 := cstrncmp_#in~n#1;havoc cstrncmp_~uc1~0#1;havoc cstrncmp_~uc2~0#1; 11#L367true assume !(0 == cstrncmp_~n#1); 9#L369-5true [2022-11-02 20:43:18,480 INFO L750 eck$LassoCheckResult]: Loop: 9#L369-5true cstrncmp_#t~post205#1 := cstrncmp_~n#1;cstrncmp_~n#1 := cstrncmp_#t~post205#1 - 1;cstrncmp_#t~short208#1 := cstrncmp_#t~post205#1 > 0; 15#L369-1true assume cstrncmp_#t~short208#1;call cstrncmp_#t~mem206#1 := read~int(cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset, 1);call cstrncmp_#t~mem207#1 := read~int(cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset, 1);cstrncmp_#t~short208#1 := cstrncmp_#t~mem206#1 == cstrncmp_#t~mem207#1; 8#L369-3true assume !!cstrncmp_#t~short208#1;havoc cstrncmp_#t~post205#1;havoc cstrncmp_#t~mem206#1;havoc cstrncmp_#t~mem207#1;havoc cstrncmp_#t~short208#1;cstrncmp_#t~short210#1 := 0 == cstrncmp_~n#1; 6#L370true assume cstrncmp_#t~short210#1; 17#L370-2true assume !cstrncmp_#t~short210#1;havoc cstrncmp_#t~mem209#1;havoc cstrncmp_#t~short210#1;cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset := cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset;cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset := cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset - 1;havoc cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset;cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset := cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset;cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset := cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset - 1;havoc cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset; 9#L369-5true [2022-11-02 20:43:18,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 1 times [2022-11-02 20:43:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:18,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693894703] [2022-11-02 20:43:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:18,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:18,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:18,730 INFO L85 PathProgramCache]: Analyzing trace with hash 52587176, now seen corresponding path program 1 times [2022-11-02 20:43:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:18,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973794895] [2022-11-02 20:43:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:18,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973794895] [2022-11-02 20:43:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973794895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:18,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:43:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656390058] [2022-11-02 20:43:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:18,809 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:43:18,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:18,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:18,854 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) [2022-11-02 20:43:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:18,899 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2022-11-02 20:43:18,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2022-11-02 20:43:18,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:43:18,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 14 transitions. [2022-11-02 20:43:18,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-11-02 20:43:18,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-11-02 20:43:18,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2022-11-02 20:43:18,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:18,911 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-02 20:43:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2022-11-02 20:43:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-02 20:43:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-11-02 20:43:18,942 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-02 20:43:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:18,948 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-02 20:43:18,948 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:43:18,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2022-11-02 20:43:18,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:43:18,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:43:18,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:43:18,954 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:43:18,954 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-02 20:43:18,954 INFO L748 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet216#1, main_#t~nondet217#1, main_#t~malloc218#1.base, main_#t~malloc218#1.offset, main_#t~malloc219#1.base, main_#t~malloc219#1.offset, main_#t~nondet220#1, main_#t~ret221#1, main_~length1~0#1, main_~length2~0#1, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset;main_~length1~0#1 := main_#t~nondet216#1;havoc main_#t~nondet216#1;main_~length2~0#1 := main_#t~nondet217#1;havoc main_#t~nondet217#1; 55#L382 assume !(main_~length1~0#1 < 1); 56#L382-2 assume !(main_~length2~0#1 < 1); 50#L385-1 call main_#t~malloc218#1.base, main_#t~malloc218#1.offset := #Ultimate.allocOnStack(main_~length1~0#1 % 18446744073709551616);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_#t~malloc218#1.base, main_#t~malloc218#1.offset;call main_#t~malloc219#1.base, main_#t~malloc219#1.offset := #Ultimate.allocOnStack(main_~length2~0#1 % 18446744073709551616);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_#t~malloc219#1.base, main_#t~malloc219#1.offset;call write~int(0, main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, 1);call write~int(0, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, 1);main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset + (main_~length1~0#1 - 1);main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset := main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset + (main_~length2~0#1 - 1);assume { :begin_inline_cstrncmp } true;cstrncmp_#in~s1#1.base, cstrncmp_#in~s1#1.offset, cstrncmp_#in~s2#1.base, cstrncmp_#in~s2#1.offset, cstrncmp_#in~n#1 := main_~nondetString1~0#1.base, main_~nondetString1~0#1.offset, main_~nondetString2~0#1.base, main_~nondetString2~0#1.offset, main_#t~nondet220#1;havoc cstrncmp_#res#1;havoc cstrncmp_#t~mem209#1, cstrncmp_#t~short210#1, cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset, cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset, cstrncmp_#t~post205#1, cstrncmp_#t~mem206#1, cstrncmp_#t~mem207#1, cstrncmp_#t~short208#1, cstrncmp_#t~mem213#1, cstrncmp_#t~mem214#1, cstrncmp_#t~ite215#1, cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset, cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset, cstrncmp_~n#1, cstrncmp_~uc1~0#1, cstrncmp_~uc2~0#1;cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset := cstrncmp_#in~s1#1.base, cstrncmp_#in~s1#1.offset;cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset := cstrncmp_#in~s2#1.base, cstrncmp_#in~s2#1.offset;cstrncmp_~n#1 := cstrncmp_#in~n#1;havoc cstrncmp_~uc1~0#1;havoc cstrncmp_~uc2~0#1; 51#L367 assume !(0 == cstrncmp_~n#1); 52#L369-5 [2022-11-02 20:43:18,955 INFO L750 eck$LassoCheckResult]: Loop: 52#L369-5 cstrncmp_#t~post205#1 := cstrncmp_~n#1;cstrncmp_~n#1 := cstrncmp_#t~post205#1 - 1;cstrncmp_#t~short208#1 := cstrncmp_#t~post205#1 > 0; 53#L369-1 assume cstrncmp_#t~short208#1;call cstrncmp_#t~mem206#1 := read~int(cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset, 1);call cstrncmp_#t~mem207#1 := read~int(cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset, 1);cstrncmp_#t~short208#1 := cstrncmp_#t~mem206#1 == cstrncmp_#t~mem207#1; 46#L369-3 assume !!cstrncmp_#t~short208#1;havoc cstrncmp_#t~post205#1;havoc cstrncmp_#t~mem206#1;havoc cstrncmp_#t~mem207#1;havoc cstrncmp_#t~short208#1;cstrncmp_#t~short210#1 := 0 == cstrncmp_~n#1; 47#L370 assume !cstrncmp_#t~short210#1;call cstrncmp_#t~mem209#1 := read~int(cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset, 1);cstrncmp_#t~short210#1 := 0 == cstrncmp_#t~mem209#1; 54#L370-2 assume !cstrncmp_#t~short210#1;havoc cstrncmp_#t~mem209#1;havoc cstrncmp_#t~short210#1;cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset := cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset;cstrncmp_~s1#1.base, cstrncmp_~s1#1.offset := cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset - 1;havoc cstrncmp_#t~post211#1.base, cstrncmp_#t~post211#1.offset;cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset := cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset;cstrncmp_~s2#1.base, cstrncmp_~s2#1.offset := cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset - 1;havoc cstrncmp_#t~post212#1.base, cstrncmp_#t~post212#1.offset; 52#L369-5 [2022-11-02 20:43:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash 889572238, now seen corresponding path program 2 times [2022-11-02 20:43:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:18,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405732239] [2022-11-02 20:43:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:18,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 52587238, now seen corresponding path program 1 times [2022-11-02 20:43:19,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:19,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74139346] [2022-11-02 20:43:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2120298631, now seen corresponding path program 1 times [2022-11-02 20:43:19,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879508627] [2022-11-02 20:43:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:43:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:43:19,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:43:20,371 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:43:20,372 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:43:20,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:43:20,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:43:20,373 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:43:20,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:20,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:43:20,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:43:20,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrncmp_reverse_alloca.i_Iteration2_Lasso [2022-11-02 20:43:20,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:43:20,374 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:43:20,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,421 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,442 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,447 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:20,451 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,290 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,295 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,298 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,301 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,303 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,318 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,321 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,324 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,326 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:21,329 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:43:22,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:43:22,300 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:43:22,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,311 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:43:22,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:43:22,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:43:22,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:43:22,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:43:22,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:43:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:43:22,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:43:22,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:43:22,347 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:43:22,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-02 20:43:22,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:22,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:43:22,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:43:22,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:43:22,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:43:22,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:43:22,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:43:22,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:43:22,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:43:22,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:43:22,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:43:22,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,463 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:43:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:43:22,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:43:22,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:43:22,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:43:22,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:43:22,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:43:22,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:43:22,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:43:22,491 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:43:22,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:22,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,543 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:43:22,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:43:22,556 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2022-11-02 20:43:22,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:43:22,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:43:22,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:43:22,570 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2022-11-02 20:43:22,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:43:22,598 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:43:22,639 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 20:43:22,639 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. [2022-11-02 20:43:22,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:43:22,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:43:22,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:43:22,686 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-11-02 20:43:22,686 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:43:22,687 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrncmp_~n#1) = 1*ULTIMATE.start_cstrncmp_~n#1 Supporting invariants [] [2022-11-02 20:43:22,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:22,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:22,865 INFO L156 tatePredicateManager]: 20 out of 20 supporting invariants were superfluous and have been removed [2022-11-02 20:43:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:43:22,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:22,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:43:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:23,092 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 20:43:23,093 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) [2022-11-02 20:43:23,149 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. [2022-11-02 20:43:23,150 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 [2022-11-02 20:43:23,151 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) [2022-11-02 20:43:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-02 20:43:23,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 5 letters. [2022-11-02 20:43:23,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:43:23,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 5 letters. [2022-11-02 20:43:23,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:43:23,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 10 letters. [2022-11-02 20:43:23,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:43:23,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2022-11-02 20:43:23,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:43:23,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2022-11-02 20:43:23,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:43:23,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:43:23,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:43:23,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:23,159 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:43:23,159 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:43:23,159 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:43:23,159 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:43:23,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:43:23,159 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:43:23,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 20:43:23,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:43:23 BoogieIcfgContainer [2022-11-02 20:43:23,168 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:43:23,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:43:23,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:43:23,169 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:43:23,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:43:18" (3/4) ... [2022-11-02 20:43:23,173 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:43:23,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:43:23,174 INFO L158 Benchmark]: Toolchain (without parser) took 5956.08ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 62.3MB in the beginning and 108.2MB in the end (delta: -45.9MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,175 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:43:23,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.62ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 71.8MB in the end (delta: -9.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.53ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,177 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 107.0MB. Free memory was 69.7MB in the beginning and 68.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,177 INFO L158 Benchmark]: RCFGBuilder took 463.72ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 55.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,178 INFO L158 Benchmark]: BuchiAutomizer took 4884.22ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 55.0MB in the beginning and 108.2MB in the end (delta: -53.2MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2022-11-02 20:43:23,178 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 159.4MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:43:23,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.62ms. Allocated memory is still 107.0MB. Free memory was 62.1MB in the beginning and 71.8MB in the end (delta: -9.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.53ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 69.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 107.0MB. Free memory was 69.7MB in the beginning and 68.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.72ms. Allocated memory is still 107.0MB. Free memory was 68.3MB in the beginning and 55.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 4884.22ms. Allocated memory was 107.0MB in the beginning and 159.4MB in the end (delta: 52.4MB). Free memory was 55.0MB in the beginning and 108.2MB in the end (delta: -53.2MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 159.4MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * 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 4.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 4.2s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 34 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital250 mio100 ax100 hnf100 lsp88 ukn103 mio100 lsp58 div151 bol100 ite100 ukn100 eq170 hnf92 smp77 dnf100 smp100 tf100 neg99 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 156ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 2 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 20:43:23,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ba5d5ba-6df8-4e66-9621-26e3100447f1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE