./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cac24a49d7b473be85039a3051680fd486b81b3 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:39,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:39,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:39,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:39,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:39,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:39,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:39,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:39,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:39,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:39,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:39,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:39,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:39,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:39,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:39,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:39,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:39,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:39,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:39,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:39,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:39,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:39,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:39,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:39,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:39,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:39,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:39,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:39,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:39,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:39,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:39,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:39,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:39,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:39,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:39,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:39,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:39,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:39,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:39,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:39,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:39,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-25 08:56:39,760 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:39,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:39,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:39,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:39,762 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:39,762 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:56:39,762 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:56:39,763 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:56:39,763 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:56:39,763 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:56:39,763 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:56:39,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:39,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:39,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:39,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:39,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:39,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:39,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:56:39,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:56:39,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:56:39,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:39,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:39,765 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:56:39,767 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:39,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:56:39,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:39,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:39,768 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:56:39,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:39,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:39,768 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:56:39,769 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:56:39,769 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cac24a49d7b473be85039a3051680fd486b81b3 [2019-11-25 08:56:39,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:39,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:39,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:39,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:39,978 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:39,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-11-25 08:56:40,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/data/37ba28118/70c2dd060ab74430a980593ac66eb853/FLAGfc673433c [2019-11-25 08:56:40,412 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:40,413 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-11-25 08:56:40,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/data/37ba28118/70c2dd060ab74430a980593ac66eb853/FLAGfc673433c [2019-11-25 08:56:40,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/data/37ba28118/70c2dd060ab74430a980593ac66eb853 [2019-11-25 08:56:40,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:40,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:40,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:40,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:40,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:40,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:40" (1/1) ... [2019-11-25 08:56:40,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dee4c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:40, skipping insertion in model container [2019-11-25 08:56:40,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:40" (1/1) ... [2019-11-25 08:56:40,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:40,853 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:41,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:41,063 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:41,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:41,168 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:41,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41 WrapperNode [2019-11-25 08:56:41,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:41,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:41,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:41,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:41,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:41,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:41,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:41,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:41,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... [2019-11-25 08:56:41,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:41,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:41,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:41,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:41,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:41,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:41,506 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:41,506 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:56:41,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:41 BoogieIcfgContainer [2019-11-25 08:56:41,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:41,508 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:56:41,508 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:56:41,524 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:56:41,525 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:41,525 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:56:40" (1/3) ... [2019-11-25 08:56:41,526 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0a9ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:41, skipping insertion in model container [2019-11-25 08:56:41,526 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:41,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:41" (2/3) ... [2019-11-25 08:56:41,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c0a9ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:56:41, skipping insertion in model container [2019-11-25 08:56:41,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:56:41,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:41" (3/3) ... [2019-11-25 08:56:41,529 INFO L371 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2019-11-25 08:56:41,614 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:56:41,614 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:56:41,616 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:56:41,616 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:41,616 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:41,616 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:56:41,616 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:41,616 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:56:41,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-25 08:56:41,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:56:41,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:41,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:41,658 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:41,659 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:41,659 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:56:41,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-25 08:56:41,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:56:41,661 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:41,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:41,661 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:56:41,662 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:41,667 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 21#L99true [2019-11-25 08:56:41,667 INFO L796 eck$LassoCheckResult]: Loop: 21#L99true assume !false; 6#L18true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 19#L24true assume 8466 == main_~s__state~0; 24#L25true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 20#L57-1true assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 21#L99true [2019-11-25 08:56:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:56:41,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:41,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370570645] [2019-11-25 08:56:41,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,764 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:41,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:41,766 INFO L82 PathProgramCache]: Analyzing trace with hash 38329778, now seen corresponding path program 1 times [2019-11-25 08:56:41,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:41,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229827094] [2019-11-25 08:56:41,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,781 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:41,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash 925833459, now seen corresponding path program 1 times [2019-11-25 08:56:41,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:41,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103985507] [2019-11-25 08:56:41,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:41,794 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:41,882 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:41,882 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:41,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:41,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:41,883 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:41,883 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:41,883 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:41,883 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:41,883 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2019-11-25 08:56:41,883 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:41,884 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:41,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:41,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:41,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,014 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:42,014 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:42,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:42,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:42,041 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=7} Honda state: {ULTIMATE.start_main_~s__hit~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:42,055 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:42,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:56:42,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,087 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:42,087 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:42,087 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:42,087 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:42,087 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:42,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:42,088 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:42,088 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2019-11-25 08:56:42,088 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:42,088 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:42,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,178 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:42,182 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:42,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:42,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:42,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:42,195 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:56:42,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:42,198 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:56:42,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,203 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,227 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:42,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:42,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:42,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:42,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:42,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:42,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:42,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,240 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:42,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:42,245 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,259 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:42,259 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:42,259 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:42,260 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2019-11-25 08:56:42,265 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:42,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:42,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:42,381 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 [2019-11-25 08:56:42,383 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 4 states. [2019-11-25 08:56:42,473 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 4 states. Result 51 states and 83 transitions. Complement of second has 5 states. [2019-11-25 08:56:42,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2019-11-25 08:56:42,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 5 letters. [2019-11-25 08:56:42,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:42,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 5 letters. [2019-11-25 08:56:42,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:42,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 10 letters. [2019-11-25 08:56:42,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:42,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 83 transitions. [2019-11-25 08:56:42,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:56:42,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 37 states and 58 transitions. [2019-11-25 08:56:42,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-11-25 08:56:42,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-25 08:56:42,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 58 transitions. [2019-11-25 08:56:42,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:42,488 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 58 transitions. [2019-11-25 08:56:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 58 transitions. [2019-11-25 08:56:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-11-25 08:56:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:56:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2019-11-25 08:56:42,511 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2019-11-25 08:56:42,511 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2019-11-25 08:56:42,511 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:56:42,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 56 transitions. [2019-11-25 08:56:42,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:56:42,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:42,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:42,514 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:56:42,514 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:56:42,514 INFO L794 eck$LassoCheckResult]: Stem: 139#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 140#L99 assume !false; 125#L18 [2019-11-25 08:56:42,514 INFO L796 eck$LassoCheckResult]: Loop: 125#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 126#L24 assume 8466 == main_~s__state~0; 145#L25 assume !(0 == main_~blastFlag~0); 147#L57-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 116#L99 assume !false; 125#L18 [2019-11-25 08:56:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-25 08:56:42,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:42,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470255420] [2019-11-25 08:56:42,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,522 INFO L82 PathProgramCache]: Analyzing trace with hash 43059010, now seen corresponding path program 1 times [2019-11-25 08:56:42,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:42,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329788537] [2019-11-25 08:56:42,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,529 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1363931911, now seen corresponding path program 1 times [2019-11-25 08:56:42,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:42,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958073933] [2019-11-25 08:56:42,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:42,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958073933] [2019-11-25 08:56:42,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:42,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:42,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116342604] [2019-11-25 08:56:42,601 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:42,602 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:42,602 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:42,602 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:42,602 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:42,602 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,602 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:42,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:42,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2019-11-25 08:56:42,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:42,603 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:42,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:42,710 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:42,715 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:42,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=7} Honda state: {ULTIMATE.start_main_~s__hit~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:42,740 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,746 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:42,746 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=1} Honda state: {ULTIMATE.start_main_~blastFlag~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:42,760 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:42,787 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,794 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:42,796 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:42,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:42,796 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:42,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:42,797 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:42,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:42,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:42,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2019-11-25 08:56:42,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:42,797 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:42,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:42,878 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:42,879 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:42,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:42,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:42,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:42,889 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:56:42,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:42,890 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:56:42,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:42,893 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,907 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:42,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:42,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:42,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:42,909 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:56:42,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:42,911 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:56:42,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:42,919 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:42,934 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:42,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:42,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:42,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:42,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:42,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:42,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:42,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:42,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:42,950 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:42,950 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:42,964 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:42,964 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:42,964 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:42,964 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8561 Supporting invariants [] [2019-11-25 08:56:42,967 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:43,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:43,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:43,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:43,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:43,047 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:43,047 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23 Second operand 5 states. [2019-11-25 08:56:43,111 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23. Second operand 5 states. Result 103 states and 154 transitions. Complement of second has 7 states. [2019-11-25 08:56:43,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:56:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2019-11-25 08:56:43,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 5 letters. [2019-11-25 08:56:43,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 7 letters. Loop has 5 letters. [2019-11-25 08:56:43,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 10 letters. [2019-11-25 08:56:43,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 154 transitions. [2019-11-25 08:56:43,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:56:43,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 76 states and 120 transitions. [2019-11-25 08:56:43,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-25 08:56:43,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-25 08:56:43,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 120 transitions. [2019-11-25 08:56:43,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:43,123 INFO L688 BuchiCegarLoop]: Abstraction has 76 states and 120 transitions. [2019-11-25 08:56:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 120 transitions. [2019-11-25 08:56:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2019-11-25 08:56:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-25 08:56:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2019-11-25 08:56:43,130 INFO L711 BuchiCegarLoop]: Abstraction has 53 states and 85 transitions. [2019-11-25 08:56:43,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:43,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:43,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:43,134 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2019-11-25 08:56:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:43,173 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2019-11-25 08:56:43,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:43,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 127 transitions. [2019-11-25 08:56:43,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-11-25 08:56:43,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 86 states and 124 transitions. [2019-11-25 08:56:43,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2019-11-25 08:56:43,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-11-25 08:56:43,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 124 transitions. [2019-11-25 08:56:43,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:43,180 INFO L688 BuchiCegarLoop]: Abstraction has 86 states and 124 transitions. [2019-11-25 08:56:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 124 transitions. [2019-11-25 08:56:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2019-11-25 08:56:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-25 08:56:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 122 transitions. [2019-11-25 08:56:43,188 INFO L711 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2019-11-25 08:56:43,188 INFO L591 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2019-11-25 08:56:43,188 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:56:43,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 122 transitions. [2019-11-25 08:56:43,190 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-11-25 08:56:43,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:43,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:43,191 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:56:43,191 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:56:43,191 INFO L794 eck$LassoCheckResult]: Stem: 468#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 469#L99 assume !false; 501#L18 [2019-11-25 08:56:43,192 INFO L796 eck$LassoCheckResult]: Loop: 501#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 498#L24 assume !(8466 == main_~s__state~0); 496#L29 assume 8512 == main_~s__state~0; 491#L30 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 443#L69 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 444#L99 assume !false; 501#L18 [2019-11-25 08:56:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2019-11-25 08:56:43,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050998083] [2019-11-25 08:56:43,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,198 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1336146262, now seen corresponding path program 1 times [2019-11-25 08:56:43,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354128926] [2019-11-25 08:56:43,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,208 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,208 INFO L82 PathProgramCache]: Analyzing trace with hash 669100671, now seen corresponding path program 1 times [2019-11-25 08:56:43,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966955663] [2019-11-25 08:56:43,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:43,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966955663] [2019-11-25 08:56:43,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:43,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:56:43,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142295558] [2019-11-25 08:56:43,286 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:43,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:43,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:43,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:43,287 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:43,287 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,287 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:43,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:43,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2019-11-25 08:56:43,288 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:43,288 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:43,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:43,383 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:43,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:43,391 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:56:43,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=2, ULTIMATE.start_main_~tmp___1~0=2} Honda state: {ULTIMATE.start_main_#t~nondet1=2, ULTIMATE.start_main_~tmp___1~0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:43,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:43,415 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:43,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:43,439 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,447 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:43,449 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:43,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:43,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:43,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:43,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:43,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:43,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:43,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2019-11-25 08:56:43,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:43,450 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:43,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:43,539 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,552 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:43,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:43,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:43,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:43,555 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:56:43,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:43,557 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:56:43,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:43,561 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,576 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:43,578 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:43,578 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:43,578 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:43,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:43,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:43,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:43,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:56:43,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:43,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:43,589 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:43,620 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:43,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:43,620 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:43,620 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,629 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:56:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:43,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:43,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:43,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:43,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:43,689 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:43,689 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44 Second operand 5 states. [2019-11-25 08:56:43,779 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44. Second operand 5 states. Result 169 states and 231 transitions. Complement of second has 9 states. [2019-11-25 08:56:43,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:56:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2019-11-25 08:56:43,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-25 08:56:43,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-25 08:56:43,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 12 letters. [2019-11-25 08:56:43,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:43,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 231 transitions. [2019-11-25 08:56:43,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-11-25 08:56:43,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 140 states and 195 transitions. [2019-11-25 08:56:43,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2019-11-25 08:56:43,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-11-25 08:56:43,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 195 transitions. [2019-11-25 08:56:43,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:43,789 INFO L688 BuchiCegarLoop]: Abstraction has 140 states and 195 transitions. [2019-11-25 08:56:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 195 transitions. [2019-11-25 08:56:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2019-11-25 08:56:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-25 08:56:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2019-11-25 08:56:43,796 INFO L711 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2019-11-25 08:56:43,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:43,797 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand 3 states. [2019-11-25 08:56:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:43,827 INFO L93 Difference]: Finished difference Result 64 states and 93 transitions. [2019-11-25 08:56:43,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:43,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 93 transitions. [2019-11-25 08:56:43,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-11-25 08:56:43,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 60 states and 89 transitions. [2019-11-25 08:56:43,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:56:43,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-11-25 08:56:43,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 89 transitions. [2019-11-25 08:56:43,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:43,831 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-11-25 08:56:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 89 transitions. [2019-11-25 08:56:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-25 08:56:43,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-25 08:56:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions. [2019-11-25 08:56:43,834 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-11-25 08:56:43,834 INFO L591 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-11-25 08:56:43,834 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:56:43,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 89 transitions. [2019-11-25 08:56:43,835 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-11-25 08:56:43,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:43,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:43,836 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:56:43,836 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:56:43,837 INFO L794 eck$LassoCheckResult]: Stem: 944#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 945#L99 assume !false; 955#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 951#L24 assume 8466 == main_~s__state~0; 952#L25 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 965#L57-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 961#L99 assume !false; 960#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 950#L24 assume !(8466 == main_~s__state~0); 936#L29 [2019-11-25 08:56:43,837 INFO L796 eck$LassoCheckResult]: Loop: 936#L29 assume 8512 == main_~s__state~0; 937#L30 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 918#L69 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 920#L99 assume !false; 932#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 933#L24 assume !(8466 == main_~s__state~0); 936#L29 [2019-11-25 08:56:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash -775328166, now seen corresponding path program 1 times [2019-11-25 08:56:43,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142132780] [2019-11-25 08:56:43,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,851 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1593798804, now seen corresponding path program 1 times [2019-11-25 08:56:43,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463844598] [2019-11-25 08:56:43,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,873 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:43,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1200158765, now seen corresponding path program 1 times [2019-11-25 08:56:43,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:43,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254863643] [2019-11-25 08:56:43,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:43,892 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:43,924 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:43,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:43,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:43,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:43,925 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:56:43,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:43,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:43,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2019-11-25 08:56:43,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:43,925 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:43,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:43,978 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:43,978 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:43,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:56:43,995 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:44,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:56:44,012 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:44,017 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:56:44,019 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:56:44,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:56:44,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:56:44,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:56:44,020 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:56:44,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:44,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:56:44,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:56:44,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2019-11-25 08:56:44,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:56:44,020 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:56:44,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:44,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:56:44,074 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:56:44,074 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:44,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:56:44,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:56:44,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:56:44,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:56:44,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:56:44,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:56:44,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:56:44,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:44,094 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:56:44,096 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:56:44,097 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:56:44,101 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:56:44,101 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:56:44,102 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:56:44,102 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2019-11-25 08:56:44,112 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:56:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:44,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:56:44,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:44,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:56:44,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:44,176 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:56:44,177 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33 Second operand 4 states. [2019-11-25 08:56:44,261 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33. Second operand 4 states. Result 182 states and 280 transitions. Complement of second has 9 states. [2019-11-25 08:56:44,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:56:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:56:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2019-11-25 08:56:44,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-25 08:56:44,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:44,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 15 letters. Loop has 6 letters. [2019-11-25 08:56:44,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:44,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 12 letters. [2019-11-25 08:56:44,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:56:44,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 280 transitions. [2019-11-25 08:56:44,266 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2019-11-25 08:56:44,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 162 states and 244 transitions. [2019-11-25 08:56:44,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-25 08:56:44,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2019-11-25 08:56:44,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 244 transitions. [2019-11-25 08:56:44,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:56:44,273 INFO L688 BuchiCegarLoop]: Abstraction has 162 states and 244 transitions. [2019-11-25 08:56:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 244 transitions. [2019-11-25 08:56:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 124. [2019-11-25 08:56:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-11-25 08:56:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2019-11-25 08:56:44,294 INFO L711 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-11-25 08:56:44,295 INFO L591 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-11-25 08:56:44,295 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:56:44,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 182 transitions. [2019-11-25 08:56:44,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-11-25 08:56:44,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:56:44,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:56:44,297 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:44,299 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:44,299 INFO L794 eck$LassoCheckResult]: Stem: 1262#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1263#L99 assume !false; 1298#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1299#L24 assume 8466 == main_~s__state~0; 1293#L25 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1290#L57-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1287#L99 assume !false; 1286#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1270#L24 assume !(8466 == main_~s__state~0); 1271#L29 assume 8512 == main_~s__state~0; 1253#L30 [2019-11-25 08:56:44,299 INFO L796 eck$LassoCheckResult]: Loop: 1253#L30 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 1234#L69 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 1235#L99 assume !false; 1319#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1284#L24 assume 8466 == main_~s__state~0; 1280#L25 assume !(0 == main_~blastFlag~0); 1274#L57-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1275#L99 assume !false; 1306#L18 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1305#L24 assume !(8466 == main_~s__state~0); 1252#L29 assume 8512 == main_~s__state~0; 1253#L30 [2019-11-25 08:56:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:44,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1734630653, now seen corresponding path program 1 times [2019-11-25 08:56:44,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:44,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691227804] [2019-11-25 08:56:44,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:44,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1859066665, now seen corresponding path program 1 times [2019-11-25 08:56:44,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:44,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232515147] [2019-11-25 08:56:44,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,316 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash -845557157, now seen corresponding path program 1 times [2019-11-25 08:56:44,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:44,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642250335] [2019-11-25 08:56:44,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:44,330 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:56:44 BoogieIcfgContainer [2019-11-25 08:56:44,422 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:56:44,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:44,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:44,423 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:44,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:41" (3/4) ... [2019-11-25 08:56:44,426 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:56:44,467 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e4fa3d45-28f8-4fdf-a32a-657b3bdab5a0/bin/uautomizer/witness.graphml [2019-11-25 08:56:44,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:44,470 INFO L168 Benchmark]: Toolchain (without parser) took 3658.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.0 GB in the end (delta: -72.0 MB). Peak memory consumption was 71.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,470 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:44,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,471 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:44,472 INFO L168 Benchmark]: Boogie Preprocessor took 39.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,472 INFO L168 Benchmark]: RCFGBuilder took 265.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,473 INFO L168 Benchmark]: BuchiAutomizer took 2914.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.5 MB). Peak memory consumption was 92.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,473 INFO L168 Benchmark]: Witness Printer took 45.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:44,476 INFO L335 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 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 265.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2914.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.5 MB). Peak memory consumption was 92.5 MB. Max. memory is 11.5 GB. * Witness Printer took 45.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8561 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8576 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 124 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 124 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 143 SDtfs, 145 SDslu, 114 SDs, 0 SdLazy, 176 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf97 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf119 smp94 tf112 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 29]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30d68d65=0, \result=0, tmp___1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e233430=1, s__hit=0, blastFlag=2, s__state=8512} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 29]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L9] int s__state ; [L10] int s__hit = __VERIFIER_nondet_int() ; [L11] int blastFlag ; [L12] int tmp___1; [L14] s__state = 8466 [L15] blastFlag = 0 [L17] COND TRUE 1 [L18] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L24] COND TRUE s__state == 8466 [L57] COND TRUE blastFlag == 0 [L58] blastFlag = 2 [L60] COND FALSE !(\read(s__hit)) [L63] s__state = 8512 [L17] COND TRUE 1 [L18] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L24] COND FALSE !(s__state == 8466) [L29] COND TRUE s__state == 8512 Loop: [L68] tmp___1 = __VERIFIER_nondet_int() [L69] COND TRUE \read(tmp___1) [L70] s__state = 8466 [L17] COND TRUE 1 [L18] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L24] COND TRUE s__state == 8466 [L57] COND FALSE !(blastFlag == 0) [L60] COND FALSE !(\read(s__hit)) [L63] s__state = 8512 [L17] COND TRUE 1 [L18] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L24] COND FALSE !(s__state == 8466) [L29] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...