./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array16_alloca_original.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array16_alloca_original.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU --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 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:57:18,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:57:18,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:57:18,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:57:18,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:57:18,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:57:18,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:57:18,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:57:18,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:57:18,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:57:18,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:57:18,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:57:18,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:57:18,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:57:18,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:57:18,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:57:18,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:57:18,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:57:18,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:57:18,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:57:18,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:57:18,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:57:18,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:57:18,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:57:18,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:57:18,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:57:18,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:57:18,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:57:18,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:57:18,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:57:18,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:57:18,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:57:18,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:57:18,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:57:18,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:57:18,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:57:18,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:57:18,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:57:18,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:57:18,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:57:18,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:57:18,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-02 22:57:18,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:57:18,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:57:18,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:57:18,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:57:18,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:57:18,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:57:18,722 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:57:18,729 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:57:18,730 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:57:18,731 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:57:18,732 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:57:18,732 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:57:18,732 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:57:18,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:57:18,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:57:18,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:57:18,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:57:18,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:57:18,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:57:18,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:57:18,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:57:18,734 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:57:18,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:57:18,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:57:18,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:57:18,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:57:18,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:57:18,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:57:18,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:57:18,738 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:57:18,738 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_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628be9b0d43b46482b2f1f32ff1648acbb8b41e569549b972a02e76fffda9076 [2021-11-02 22:57:19,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:57:19,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:57:19,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:57:19,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:57:19,180 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:57:19,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-11-02 22:57:19,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/data/eb25800cc/8332c09a506c4316aadce1c3907f7a17/FLAG1b759683c [2021-11-02 22:57:20,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:57:20,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/sv-benchmarks/c/termination-15/array16_alloca_original.i [2021-11-02 22:57:20,039 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/data/eb25800cc/8332c09a506c4316aadce1c3907f7a17/FLAG1b759683c [2021-11-02 22:57:20,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/data/eb25800cc/8332c09a506c4316aadce1c3907f7a17 [2021-11-02 22:57:20,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:57:20,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:57:20,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:20,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:57:20,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:57:20,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:20,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671fed1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20, skipping insertion in model container [2021-11-02 22:57:20,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:20,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:57:20,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:57:20,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:20,837 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:57:20,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:57:20,982 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:57:20,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20 WrapperNode [2021-11-02 22:57:20,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:57:20,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:57:20,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:57:20,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:57:20,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:57:21,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:57:21,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:57:21,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:57:21,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:57:21,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:57:21,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:57:21,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:57:21,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (1/1) ... [2021-11-02 22:57:21,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:21,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:21,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:57:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:57:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:57:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:57:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:57:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:57:21,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:57:21,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:57:21,558 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-02 22:57:21,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:57:21 BoogieIcfgContainer [2021-11-02 22:57:21,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:57:21,562 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:57:21,562 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:57:21,573 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:57:21,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:57:21,574 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:57:20" (1/3) ... [2021-11-02 22:57:21,587 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e4fab78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:57:21, skipping insertion in model container [2021-11-02 22:57:21,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:57:21,588 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:57:20" (2/3) ... [2021-11-02 22:57:21,588 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e4fab78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:57:21, skipping insertion in model container [2021-11-02 22:57:21,588 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:57:21,589 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:57:21" (3/3) ... [2021-11-02 22:57:21,590 INFO L389 chiAutomizerObserver]: Analyzing ICFG array16_alloca_original.i [2021-11-02 22:57:21,681 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:57:21,694 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:57:21,695 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:57:21,695 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:57:21,695 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:57:21,695 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:57:21,695 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:57:21,696 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:57:21,736 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:21,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-11-02 22:57:21,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:21,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:21,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-02 22:57:21,768 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:57:21,768 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:57:21,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:21,771 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-11-02 22:57:21,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:21,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:21,772 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-02 22:57:21,772 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:57:21,781 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 11#L367true assume !(main_~length~0 < 1); 8#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 5#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 6#L370-3true [2021-11-02 22:57:21,781 INFO L793 eck$LassoCheckResult]: Loop: 6#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 13#L372true assume 1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2);havoc main_#t~mem209;call write~int(0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 16#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 6#L370-3true [2021-11-02 22:57:21,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:21,789 INFO L85 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2021-11-02 22:57:21,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:21,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918093149] [2021-11-02 22:57:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:21,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:21,944 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:22,010 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:22,014 INFO L85 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2021-11-02 22:57:22,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:22,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834780795] [2021-11-02 22:57:22,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:22,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:22,058 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:22,088 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2021-11-02 22:57:22,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:22,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351581281] [2021-11-02 22:57:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:22,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:22,128 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:22,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:22,684 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:57:22,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:57:22,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:57:22,686 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:57:22,686 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-02 22:57:22,686 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:22,686 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:57:22,687 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:57:22,687 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration1_Lasso [2021-11-02 22:57:22,687 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:57:22,687 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:57:22,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:22,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:23,270 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:57:23,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-02 22:57:23,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,285 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 [2021-11-02 22:57:23,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,304 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-02 22:57:23,323 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,381 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 [2021-11-02 22:57:23,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:23,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-02 22:57:23,410 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,459 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 [2021-11-02 22:57:23,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,470 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:23,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-02 22:57:23,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,540 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 [2021-11-02 22:57:23,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-02 22:57:23,566 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-02 22:57:23,619 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 [2021-11-02 22:57:23,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,634 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:23,635 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:23,654 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-02 22:57:23,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,708 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 [2021-11-02 22:57:23,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-02 22:57:23,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:23,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-02 22:57:23,787 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 [2021-11-02 22:57:23,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:23,811 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:23,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,881 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 [2021-11-02 22:57:23,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,900 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:23,900 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:23,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-02 22:57:23,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:23,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:23,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:23,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:23,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:23,976 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 [2021-11-02 22:57:23,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:23,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:23,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:23,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:23,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:23,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:23,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:24,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-02 22:57:24,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:24,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:24,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:24,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:24,050 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:24,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-02 22:57:24,059 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 [2021-11-02 22:57:24,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:24,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:24,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:24,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:24,081 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:24,081 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:24,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-02 22:57:24,134 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-02 22:57:24,134 INFO L444 ModelExtractionUtils]: 11 out of 22 variables were initially zero. Simplification set additionally 8 variables to zero. [2021-11-02 22:57:24,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:24,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:24,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-02 22:57:24,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-02 22:57:24,176 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-02 22:57:24,176 INFO L513 LassoAnalysis]: Proved termination. [2021-11-02 22:57:24,177 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2021-11-02 22:57:24,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:24,225 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-02 22:57:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:24,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:57:24,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:24,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:57:24,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:24,393 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-02 22:57:24,394 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:24,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 50 transitions. Complement of second has 7 states. [2021-11-02 22:57:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-02 22:57:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-11-02 22:57:24,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2021-11-02 22:57:24,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:24,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 8 letters. Loop has 3 letters. [2021-11-02 22:57:24,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:24,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 6 letters. [2021-11-02 22:57:24,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:24,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-11-02 22:57:24,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:24,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 12 states and 17 transitions. [2021-11-02 22:57:24,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-02 22:57:24,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-02 22:57:24,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-11-02 22:57:24,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:24,511 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-02 22:57:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-11-02 22:57:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-02 22:57:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-11-02 22:57:24,543 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-02 22:57:24,544 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-02 22:57:24,544 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 22:57:24,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2021-11-02 22:57:24,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:24,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:24,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:24,548 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:24,548 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:24,548 INFO L791 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 114#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 121#L367 assume !(main_~length~0 < 1); 115#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 116#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 117#L370-3 assume !(main_~i~0 < main_~length~0); 118#L370-4 main_~j~0 := 0; 119#L378-2 [2021-11-02 22:57:24,549 INFO L793 eck$LassoCheckResult]: Loop: 119#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 120#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 119#L378-2 [2021-11-02 22:57:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2021-11-02 22:57:24,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:24,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136766134] [2021-11-02 22:57:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:24,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:24,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:24,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:24,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136766134] [2021-11-02 22:57:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136766134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:24,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:57:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:57:24,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603585850] [2021-11-02 22:57:24,691 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-02 22:57:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 1 times [2021-11-02 22:57:24,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:24,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874893642] [2021-11-02 22:57:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:24,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,701 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,709 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:24,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:57:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:57:24,777 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:24,812 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-11-02 22:57:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:57:24,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-11-02 22:57:24,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:24,815 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 19 transitions. [2021-11-02 22:57:24,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-11-02 22:57:24,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-11-02 22:57:24,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-11-02 22:57:24,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:57:24,817 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-02 22:57:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-11-02 22:57:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-11-02 22:57:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-02 22:57:24,820 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-02 22:57:24,820 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-02 22:57:24,820 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 22:57:24,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-02 22:57:24,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:24,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:24,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:24,822 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:24,822 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:24,823 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 147#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 154#L367 assume !(main_~length~0 < 1); 148#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 149#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 150#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 155#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 157#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 156#L370-3 assume !(main_~i~0 < main_~length~0); 151#L370-4 main_~j~0 := 0; 152#L378-2 [2021-11-02 22:57:24,823 INFO L793 eck$LassoCheckResult]: Loop: 152#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 153#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 152#L378-2 [2021-11-02 22:57:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2021-11-02 22:57:24,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:24,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411697584] [2021-11-02 22:57:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:24,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,840 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 2 times [2021-11-02 22:57:24,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:24,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963881461] [2021-11-02 22:57:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:24,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,866 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996831, now seen corresponding path program 1 times [2021-11-02 22:57:24,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:24,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141262519] [2021-11-02 22:57:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:24,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,901 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:24,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:25,353 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:57:25,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:57:25,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:57:25,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:57:25,353 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-02 22:57:25,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:25,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:57:25,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:57:25,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration3_Lasso [2021-11-02 22:57:25,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:57:25,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:57:25,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:25,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:26,117 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:57:26,117 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-02 22:57:26,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:26,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:26,130 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 [2021-11-02 22:57:26,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:26,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:26,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:26,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:26,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:26,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:26,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:26,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-02 22:57:26,162 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:26,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:26,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:26,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:26,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:26,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-02 22:57:26,204 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 [2021-11-02 22:57:26,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:26,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:26,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:26,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:26,221 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:26,221 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:26,238 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:26,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:26,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:26,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:26,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:26,292 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 [2021-11-02 22:57:26,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:26,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:26,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:26,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:26,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:26,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:26,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-02 22:57:26,334 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-02 22:57:26,366 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-11-02 22:57:26,367 INFO L444 ModelExtractionUtils]: 2 out of 25 variables were initially zero. Simplification set additionally 20 variables to zero. [2021-11-02 22:57:26,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:26,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:26,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:26,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-02 22:57:26,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-02 22:57:26,416 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-02 22:57:26,416 INFO L513 LassoAnalysis]: Proved termination. [2021-11-02 22:57:26,416 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2021-11-02 22:57:26,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:26,467 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-02 22:57:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:26,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:57:26,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:26,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:57:26,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:26,586 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-02 22:57:26,587 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:26,615 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 22 transitions. Complement of second has 5 states. [2021-11-02 22:57:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-02 22:57:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2021-11-02 22:57:26,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2021-11-02 22:57:26,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:26,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2021-11-02 22:57:26,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:26,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2021-11-02 22:57:26,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:26,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2021-11-02 22:57:26,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:26,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2021-11-02 22:57:26,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-02 22:57:26,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-02 22:57:26,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-11-02 22:57:26,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:57:26,620 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-02 22:57:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-11-02 22:57:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-02 22:57:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2021-11-02 22:57:26,623 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-02 22:57:26,623 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-11-02 22:57:26,623 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-02 22:57:26,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2021-11-02 22:57:26,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:26,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:26,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:26,625 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:26,625 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:26,625 INFO L791 eck$LassoCheckResult]: Stem: 243#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 244#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 254#L367 assume !(main_~length~0 < 1); 245#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 246#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 247#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 255#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 257#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 256#L370-3 assume !(main_~i~0 < main_~length~0); 248#L370-4 main_~j~0 := 0; 249#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 250#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 251#L378-2 [2021-11-02 22:57:26,625 INFO L793 eck$LassoCheckResult]: Loop: 251#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 258#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 251#L378-2 [2021-11-02 22:57:26,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996833, now seen corresponding path program 1 times [2021-11-02 22:57:26,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:26,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304185449] [2021-11-02 22:57:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:26,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:26,661 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:26,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:26,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 3 times [2021-11-02 22:57:26,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:26,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489871691] [2021-11-02 22:57:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:26,736 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:26,742 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash -645451100, now seen corresponding path program 1 times [2021-11-02 22:57:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:26,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900897767] [2021-11-02 22:57:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:26,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:57:26,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:26,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900897767] [2021-11-02 22:57:26,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900897767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:26,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865322138] [2021-11-02 22:57:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:26,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:26,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:26,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:26,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:57:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:57:26,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:57:26,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865322138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:57:26,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:57:26,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-02 22:57:26,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106938574] [2021-11-02 22:57:27,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:57:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:57:27,003 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-11-02 22:57:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:27,031 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-11-02 22:57:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:57:27,032 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2021-11-02 22:57:27,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:27,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 22 transitions. [2021-11-02 22:57:27,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-02 22:57:27,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-02 22:57:27,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2021-11-02 22:57:27,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:57:27,035 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-02 22:57:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2021-11-02 22:57:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-02 22:57:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-02 22:57:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-11-02 22:57:27,040 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-11-02 22:57:27,040 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-11-02 22:57:27,040 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-02 22:57:27,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-11-02 22:57:27,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:27,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:27,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:27,044 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:27,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:27,045 INFO L791 eck$LassoCheckResult]: Stem: 327#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 328#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 338#L367 assume !(main_~length~0 < 1); 329#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 330#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 331#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 339#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 342#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 340#L370-3 assume !(main_~i~0 < main_~length~0); 336#L370-4 main_~j~0 := 0; 337#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 334#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 335#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 332#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 333#L378-2 [2021-11-02 22:57:27,045 INFO L793 eck$LassoCheckResult]: Loop: 333#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 341#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 333#L378-2 [2021-11-02 22:57:27,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash -645453020, now seen corresponding path program 2 times [2021-11-02 22:57:27,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510050315] [2021-11-02 22:57:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:27,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:27,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510050315] [2021-11-02 22:57:27,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510050315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:27,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347267156] [2021-11-02 22:57:27,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:57:27,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:27,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:27,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:27,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:57:27,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:57:27,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:27,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:57:27,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:27,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347267156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:27,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:27,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-02 22:57:27,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603829934] [2021-11-02 22:57:27,323 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-02 22:57:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 4 times [2021-11-02 22:57:27,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143115962] [2021-11-02 22:57:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,336 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:27,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:57:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:57:27,435 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:27,571 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-02 22:57:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:57:27,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 43 transitions. [2021-11-02 22:57:27,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:27,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 21 states and 27 transitions. [2021-11-02 22:57:27,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-02 22:57:27,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-02 22:57:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2021-11-02 22:57:27,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:57:27,575 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2021-11-02 22:57:27,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2021-11-02 22:57:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-02 22:57:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-11-02 22:57:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-11-02 22:57:27,578 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-11-02 22:57:27,578 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-11-02 22:57:27,578 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-02 22:57:27,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 24 transitions. [2021-11-02 22:57:27,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:27,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:27,582 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:27,583 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:27,583 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:27,583 INFO L791 eck$LassoCheckResult]: Stem: 438#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 439#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 449#L367 assume !(main_~length~0 < 1); 440#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 441#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 442#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 450#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 455#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 451#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 452#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 453#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 456#L370-3 assume !(main_~i~0 < main_~length~0); 443#L370-4 main_~j~0 := 0; 444#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 447#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 448#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 445#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 446#L378-2 [2021-11-02 22:57:27,583 INFO L793 eck$LassoCheckResult]: Loop: 446#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 454#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 446#L378-2 [2021-11-02 22:57:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -685994466, now seen corresponding path program 3 times [2021-11-02 22:57:27,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253781996] [2021-11-02 22:57:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,668 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:27,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 5 times [2021-11-02 22:57:27,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230195150] [2021-11-02 22:57:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,744 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:27,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2110684191, now seen corresponding path program 4 times [2021-11-02 22:57:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:27,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315425367] [2021-11-02 22:57:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:27,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,799 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:27,883 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:28,517 INFO L210 LassoAnalysis]: Preferences: [2021-11-02 22:57:28,517 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-02 22:57:28,518 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-02 22:57:28,518 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-02 22:57:28,518 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-02 22:57:28,518 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:28,518 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-02 22:57:28,518 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-02 22:57:28,518 INFO L133 ssoRankerPreferences]: Filename of dumped script: array16_alloca_original.i_Iteration6_Lasso [2021-11-02 22:57:28,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-02 22:57:28,518 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-02 22:57:28,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:28,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-02 22:57:29,060 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-02 22:57:29,060 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-02 22:57:29,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,067 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,075 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 [2021-11-02 22:57:29,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:29,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:29,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:29,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-02 22:57:29,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,122 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-02 22:57:29,128 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 [2021-11-02 22:57:29,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:29,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:29,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:29,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-02 22:57:29,182 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 [2021-11-02 22:57:29,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:29,195 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:29,206 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,234 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-02 22:57:29,236 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 [2021-11-02 22:57:29,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:29,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:29,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:29,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,270 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,271 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 [2021-11-02 22:57:29,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:29,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:29,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:29,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-02 22:57:29,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,312 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-02 22:57:29,317 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 [2021-11-02 22:57:29,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-02 22:57:29,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-02 22:57:29,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-02 22:57:29,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,351 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,357 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 [2021-11-02 22:57:29,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-02 22:57:29,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,368 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:29,368 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:29,394 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-02 22:57:29,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,439 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,441 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 [2021-11-02 22:57:29,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-02 22:57:29,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-02 22:57:29,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-02 22:57:29,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-02 22:57:29,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-02 22:57:29,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-02 22:57:29,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-02 22:57:29,478 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-02 22:57:29,545 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2021-11-02 22:57:29,545 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. [2021-11-02 22:57:29,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:57:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:29,570 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:57:29,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-02 22:57:29,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-02 22:57:29,667 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-11-02 22:57:29,667 INFO L513 LassoAnalysis]: Proved termination. [2021-11-02 22:57:29,667 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_3, ULTIMATE.start_main_~j~0) = 3*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_3 - 8*ULTIMATE.start_main_~j~0 Supporting invariants [-1*ULTIMATE.start_main_~length~0 + 2 >= 0] [2021-11-02 22:57:29,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:29,743 INFO L297 tatePredicateManager]: 3 out of 5 supporting invariants were superfluous and have been removed [2021-11-02 22:57:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:29,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:57:29,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:30,123 WARN L261 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:57:30,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:30,173 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.6 stem predicates 2 loop predicates [2021-11-02 22:57:30,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-02 22:57:30,326 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 24 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 47 transitions. Complement of second has 11 states. [2021-11-02 22:57:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 6 stem states 1 non-accepting loop states 2 accepting loop states [2021-11-02 22:57:30,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-02 22:57:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 33 transitions. [2021-11-02 22:57:30,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 17 letters. Loop has 2 letters. [2021-11-02 22:57:30,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:30,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 19 letters. Loop has 2 letters. [2021-11-02 22:57:30,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:30,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 33 transitions. Stem has 17 letters. Loop has 4 letters. [2021-11-02 22:57:30,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-02 22:57:30,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2021-11-02 22:57:30,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:30,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 47 transitions. [2021-11-02 22:57:30,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-11-02 22:57:30,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-11-02 22:57:30,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 47 transitions. [2021-11-02 22:57:30,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:57:30,345 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2021-11-02 22:57:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 47 transitions. [2021-11-02 22:57:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-11-02 22:57:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 27 states have internal predecessors, (37), 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) [2021-11-02 22:57:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-11-02 22:57:30,350 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-02 22:57:30,350 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-11-02 22:57:30,350 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-02 22:57:30,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 37 transitions. [2021-11-02 22:57:30,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-02 22:57:30,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:30,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:30,355 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:30,355 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-02 22:57:30,355 INFO L791 eck$LassoCheckResult]: Stem: 615#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 616#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 626#L367 assume !(main_~length~0 < 1); 617#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 618#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 619#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 627#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 636#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 628#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 629#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 633#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 634#L370-3 assume !(main_~i~0 < main_~length~0); 635#L370-4 main_~j~0 := 0; 641#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 640#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 639#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 637#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 638#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 622#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 623#L378-2 [2021-11-02 22:57:30,356 INFO L793 eck$LassoCheckResult]: Loop: 623#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 632#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 623#L378-2 [2021-11-02 22:57:30,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2110684189, now seen corresponding path program 5 times [2021-11-02 22:57:30,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:30,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692875490] [2021-11-02 22:57:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:30,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:30,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:30,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692875490] [2021-11-02 22:57:30,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692875490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:30,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178167129] [2021-11-02 22:57:30,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:57:30,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:30,860 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:30,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:57:30,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-02 22:57:30,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:30,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:57:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:31,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-02 22:57:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:57:31,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178167129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:31,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:31,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2021-11-02 22:57:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882673096] [2021-11-02 22:57:31,291 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-02 22:57:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2308, now seen corresponding path program 6 times [2021-11-02 22:57:31,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:31,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249764180] [2021-11-02 22:57:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:31,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,306 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:31,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:31,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:57:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:57:31,386 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. cyclomatic complexity: 13 Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-11-02 22:57:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:31,606 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2021-11-02 22:57:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:57:31,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2021-11-02 22:57:31,608 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-02 22:57:31,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 42 states and 54 transitions. [2021-11-02 22:57:31,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-11-02 22:57:31,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2021-11-02 22:57:31,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2021-11-02 22:57:31,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-02 22:57:31,609 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-11-02 22:57:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2021-11-02 22:57:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-11-02 22:57:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 37 states have internal predecessors, (50), 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) [2021-11-02 22:57:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2021-11-02 22:57:31,613 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-11-02 22:57:31,613 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-11-02 22:57:31,617 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-02 22:57:31,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 50 transitions. [2021-11-02 22:57:31,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-02 22:57:31,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:57:31,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:57:31,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:31,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-11-02 22:57:31,620 INFO L791 eck$LassoCheckResult]: Stem: 761#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 762#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_#t~post211, main_#t~post212, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 771#L367 assume !(main_~length~0 < 1); 763#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 764#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 765#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 772#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 783#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 773#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 774#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 775#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 780#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 782#L372 assume !(1 == (if main_#t~mem209 < 0 && 0 != main_#t~mem209 % 2 then main_#t~mem209 % 2 - 2 else main_#t~mem209 % 2));havoc main_#t~mem209; 778#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 779#L370-3 assume !(main_~i~0 < main_~length~0); 766#L370-4 main_~j~0 := 0; 767#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 797#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 795#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 790#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 788#L378-2 [2021-11-02 22:57:31,620 INFO L793 eck$LassoCheckResult]: Loop: 788#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 784#L378 assume 0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2);havoc main_#t~mem210;main_#t~post211 := main_~j~0;main_~j~0 := 1 + main_#t~post211;havoc main_#t~post211; 785#L378-2 assume !!(0 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 789#L378 assume !(0 == (if main_#t~mem210 < 0 && 0 != main_#t~mem210 % 2 then main_#t~mem210 % 2 - 2 else main_#t~mem210 % 2));havoc main_#t~mem210;main_#t~post212 := main_~j~0;main_~j~0 := main_#t~post212 - 1;havoc main_#t~post212; 788#L378-2 [2021-11-02 22:57:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1570402076, now seen corresponding path program 6 times [2021-11-02 22:57:31,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:31,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989285551] [2021-11-02 22:57:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:31,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,677 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2219337, now seen corresponding path program 1 times [2021-11-02 22:57:31,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:31,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559765486] [2021-11-02 22:57:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:31,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,737 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -507624276, now seen corresponding path program 7 times [2021-11-02 22:57:31,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:31,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655294690] [2021-11-02 22:57:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:31,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,783 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:57:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:57:31,835 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:57:32,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:57:32 BoogieIcfgContainer [2021-11-02 22:57:32,859 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:57:32,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:57:32,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:57:32,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:57:32,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:57:21" (3/4) ... [2021-11-02 22:57:32,864 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:57:32,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dfbfb28-776c-4cfd-b7b7-cbb92c77411a/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:57:32,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:57:32,932 INFO L168 Benchmark]: Toolchain (without parser) took 12643.24 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 80.5 MB in the beginning and 74.1 MB in the end (delta: 6.4 MB). Peak memory consumption was 36.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,932 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:57:32,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.50 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 84.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,934 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.74 ms. Allocated memory is still 117.4 MB. Free memory was 84.1 MB in the beginning and 82.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,934 INFO L168 Benchmark]: Boogie Preprocessor took 41.17 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 81.1 MB in the end (delta: 973.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:57:32,934 INFO L168 Benchmark]: RCFGBuilder took 460.66 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 71.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,935 INFO L168 Benchmark]: BuchiAutomizer took 11297.57 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 71.0 MB in the beginning and 76.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,935 INFO L168 Benchmark]: Witness Printer took 70.12 ms. Allocated memory is still 146.8 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:57:32,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 90.1 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 688.50 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 84.1 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.74 ms. Allocated memory is still 117.4 MB. Free memory was 84.1 MB in the beginning and 82.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.17 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 81.1 MB in the end (delta: 973.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 460.66 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 71.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 11297.57 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 71.0 MB in the beginning and 76.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 70.9 MB. Max. memory is 16.1 GB. * Witness Printer took 70.12 ms. Allocated memory is still 146.8 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (4 trivial, 3 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function length + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function -8 * j + 3 * unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] and consists of 9 locations. 4 modules have a trivial ranking function, the largest among these consists of 16 locations. The remainder module has 38 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.1s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 9.4s. Construction of modules took 0.3s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 38 states and ocurred in iteration 7. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 120 SDslu, 104 SDs, 0 SdLazy, 282 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU3 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital146 mio100 ax100 hnf99 lsp92 ukn91 mio100 lsp53 div147 bol100 ite100 ukn100 eq155 hnf70 smp93 dnf103 smp98 tf100 neg99 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, \result=0, NULL=1, arr=2, arr=0, i=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@eb44643=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cb7d394=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@704aec4a=0, length=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@5632ed23=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@704aec4a=2, j=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@4d875f5a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@4e98f7c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@d0aea85=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2d96aa36=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i