./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex07.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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 64bit --witnessprinter.graph.data.programhash f77d0d21d7cb1d6a29608eb65655982c4edaf4ed ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-cad4683 [2019-10-22 08:56:45,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:45,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:45,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:45,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:45,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:45,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:45,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:45,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:45,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:45,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:45,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:45,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:45,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:45,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:45,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:45,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:45,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:45,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:45,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:45,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:45,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:45,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:45,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:45,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:45,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:45,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:45,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:45,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:45,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:45,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:45,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:45,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:45,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:45,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:45,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:45,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:45,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:45,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:45,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:45,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:45,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:56:45,421 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:45,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:45,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:45,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:45,423 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:45,423 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:45,424 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:45,424 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:45,424 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:45,424 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:45,424 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:45,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:45,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:45,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:45,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:45,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:45,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:45,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:45,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:45,426 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:45,426 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:45,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:45,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:45,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:45,427 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:45,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:45,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:45,428 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:45,429 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:45,429 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/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f77d0d21d7cb1d6a29608eb65655982c4edaf4ed [2019-10-22 08:56:45,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:45,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:45,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:45,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:45,474 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:45,475 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07.c [2019-10-22 08:56:45,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/data/5f3d969f1/e0ccc8f7105f43ce97029e50e49a865a/FLAG90c9faea4 [2019-10-22 08:56:45,916 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:45,916 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/sv-benchmarks/c/termination-restricted-15/Ex07.c [2019-10-22 08:56:45,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/data/5f3d969f1/e0ccc8f7105f43ce97029e50e49a865a/FLAG90c9faea4 [2019-10-22 08:56:45,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/data/5f3d969f1/e0ccc8f7105f43ce97029e50e49a865a [2019-10-22 08:56:45,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:45,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:45,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:45,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:45,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:45,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:45" (1/1) ... [2019-10-22 08:56:45,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c23e08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:45, skipping insertion in model container [2019-10-22 08:56:45,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:45" (1/1) ... [2019-10-22 08:56:45,955 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:45,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:46,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:46,115 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:46,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:46,210 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:46,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46 WrapperNode [2019-10-22 08:56:46,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:46,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:46,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:46,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:46,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:46,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:46,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:46,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:46,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... [2019-10-22 08:56:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:46,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:46,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:46,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:46,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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 [2019-10-22 08:56:46,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:46,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:46,507 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:46,508 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:56:46,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:46 BoogieIcfgContainer [2019-10-22 08:56:46,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:46,510 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:46,510 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:46,516 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:46,517 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:46,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:45" (1/3) ... [2019-10-22 08:56:46,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df1e30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:46, skipping insertion in model container [2019-10-22 08:56:46,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:46,519 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:46" (2/3) ... [2019-10-22 08:56:46,520 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df1e30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:46, skipping insertion in model container [2019-10-22 08:56:46,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:46,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:46" (3/3) ... [2019-10-22 08:56:46,522 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2019-10-22 08:56:46,580 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:46,580 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:46,580 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:46,580 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:46,580 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:46,581 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:46,581 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:46,581 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:46,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:56:46,629 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:46,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:46,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:46,637 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:46,637 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:46,637 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:46,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 08:56:46,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:46,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:46,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:46,639 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:46,639 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:46,648 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-10-22 08:56:46,649 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(0 != ~unnamed0~0~true); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2019-10-22 08:56:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:46,656 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:56:46,667 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:46,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783870097] [2019-10-22 08:56:46,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:46,782 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:46,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:46,785 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-10-22 08:56:46,785 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:46,785 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592694525] [2019-10-22 08:56:46,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:46,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592694525] [2019-10-22 08:56:46,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:46,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:46,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364250405] [2019-10-22 08:56:46,910 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:56:46,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:46,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:46,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:46,961 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-10-22 08:56:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:47,001 INFO L93 Difference]: Finished difference Result 7 states and 10 transitions. [2019-10-22 08:56:47,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:47,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2019-10-22 08:56:47,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:56:47,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2019-10-22 08:56:47,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:56:47,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:56:47,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-10-22 08:56:47,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:47,012 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:47,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-10-22 08:56:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 08:56:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 08:56:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-10-22 08:56:47,042 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:47,042 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-10-22 08:56:47,042 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:47,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-10-22 08:56:47,043 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:56:47,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:47,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:47,043 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:47,043 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:47,044 INFO L791 eck$LassoCheckResult]: Stem: 27#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 28#L13-1 [2019-10-22 08:56:47,044 INFO L793 eck$LassoCheckResult]: Loop: 28#L13-1 assume !!(0 != ~unnamed0~0~true); 24#L10 assume !(main_~i~0 > 0); 26#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 28#L13-1 [2019-10-22 08:56:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,044 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-10-22 08:56:47,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620855612] [2019-10-22 08:56:47,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,051 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,052 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-10-22 08:56:47,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455590856] [2019-10-22 08:56:47,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,065 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2019-10-22 08:56:47,067 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,067 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110376064] [2019-10-22 08:56:47,067 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,084 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,142 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:47,143 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:47,143 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:47,144 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:47,144 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:47,144 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,144 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:47,144 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:47,144 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2019-10-22 08:56:47,145 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:47,145 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:47,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,263 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:47,263 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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 [2019-10-22 08:56:47,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:47,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:47,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:47,284 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) [2019-10-22 08:56:47,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:47,296 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:47,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:47,311 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:47,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:47,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:47,334 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:47,334 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:47,334 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:47,334 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:47,335 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:47,335 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,335 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:47,335 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:47,335 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2019-10-22 08:56:47,335 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:47,335 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:47,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,399 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:47,405 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:47,407 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 [2019-10-22 08:56:47,408 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:47,409 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:47,409 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:47,409 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:47,414 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:47,414 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:47,421 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:47,422 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 [2019-10-22 08:56:47,423 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:47,423 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:47,424 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:47,424 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:47,424 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:47,425 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:47,425 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:47,434 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:47,438 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:47,438 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:56:47,441 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:47,441 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:47,441 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:47,442 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:56:47,449 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:47,584 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:47,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:47,594 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:47,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:47,613 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 [2019-10-22 08:56:47,614 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-10-22 08:56:47,658 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 26 transitions. Complement of second has 8 states. [2019-10-22 08:56:47,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-10-22 08:56:47,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:56:47,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:56:47,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:56:47,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-10-22 08:56:47,664 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:56:47,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2019-10-22 08:56:47,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-10-22 08:56:47,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-10-22 08:56:47,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-10-22 08:56:47,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:47,665 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-10-22 08:56:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-10-22 08:56:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-10-22 08:56:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:56:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-10-22 08:56:47,667 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 08:56:47,667 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 08:56:47,667 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:56:47,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-10-22 08:56:47,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:56:47,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:47,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:47,668 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:56:47,668 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:47,669 INFO L791 eck$LassoCheckResult]: Stem: 91#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 92#L13-1 assume !!(0 != ~unnamed0~0~true); 96#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 98#L10-2 [2019-10-22 08:56:47,669 INFO L793 eck$LassoCheckResult]: Loop: 98#L10-2 assume !(main_~i~0 < 0); 93#L13-1 assume !!(0 != ~unnamed0~0~true); 94#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 98#L10-2 [2019-10-22 08:56:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-10-22 08:56:47,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592600192] [2019-10-22 08:56:47,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,670 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,682 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,685 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2019-10-22 08:56:47,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693132975] [2019-10-22 08:56:47,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,696 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2019-10-22 08:56:47,697 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815159371] [2019-10-22 08:56:47,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,708 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,724 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:47,724 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:47,724 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:47,725 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:47,725 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:47,725 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,725 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:47,725 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:47,725 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2019-10-22 08:56:47,725 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:47,725 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:47,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,776 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:47,776 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) [2019-10-22 08:56:47,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:47,781 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,786 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:47,786 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) [2019-10-22 08:56:47,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:47,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:47,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:47,808 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:47,810 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:47,810 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:47,811 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:47,811 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:47,811 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:47,811 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:47,811 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:47,811 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:47,811 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2019-10-22 08:56:47,811 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:47,811 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:47,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:47,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:47,855 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:47,855 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 [2019-10-22 08:56:47,856 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:47,856 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:47,856 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:47,856 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:47,856 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:47,857 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:47,857 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:47,861 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:47,865 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:47,865 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:56:47,865 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:47,865 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:47,866 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:47,866 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:56:47,866 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:47,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:47,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:47,887 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:47,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:47,897 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 [2019-10-22 08:56:47,897 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-10-22 08:56:47,910 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2019-10-22 08:56:47,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:56:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-10-22 08:56:47,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:56:47,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:56:47,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:56:47,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:47,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-10-22 08:56:47,913 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:56:47,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2019-10-22 08:56:47,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-10-22 08:56:47,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 08:56:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-10-22 08:56:47,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:47,914 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-10-22 08:56:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-10-22 08:56:47,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2019-10-22 08:56:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:56:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-10-22 08:56:47,916 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:56:47,916 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:56:47,916 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:56:47,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-10-22 08:56:47,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:56:47,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:47,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:47,917 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:56:47,918 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:56:47,918 INFO L791 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 161#L13-1 assume !!(0 != ~unnamed0~0~true); 168#L10 assume !(main_~i~0 > 0); 156#L10-2 [2019-10-22 08:56:47,918 INFO L793 eck$LassoCheckResult]: Loop: 156#L10-2 assume !(main_~i~0 < 0); 162#L13-1 assume !!(0 != ~unnamed0~0~true); 155#L10 assume !(main_~i~0 > 0); 156#L10-2 [2019-10-22 08:56:47,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,918 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-10-22 08:56:47,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257632605] [2019-10-22 08:56:47,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,924 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,925 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2019-10-22 08:56:47,925 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122067856] [2019-10-22 08:56:47,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,935 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:47,935 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2019-10-22 08:56:47,936 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:47,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547492357] [2019-10-22 08:56:47,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,936 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:47,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,942 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:47 BoogieIcfgContainer [2019-10-22 08:56:47,986 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:47,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:47,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:47,986 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:47,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:46" (3/4) ... [2019-10-22 08:56:47,990 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:56:48,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9141022c-0dc2-4817-a20a-c9f0c4d7aa89/bin/uautomizer/witness.graphml [2019-10-22 08:56:48,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:48,027 INFO L168 Benchmark]: Toolchain (without parser) took 2088.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 983.7 MB in the end (delta: -39.2 MB). Peak memory consumption was 96.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:48,028 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:48,028 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:48,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.02 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. [2019-10-22 08:56:48,029 INFO L168 Benchmark]: Boogie Preprocessor took 15.29 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. [2019-10-22 08:56:48,029 INFO L168 Benchmark]: RCFGBuilder took 248.18 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:48,030 INFO L168 Benchmark]: BuchiAutomizer took 1475.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 129.4 MB). Peak memory consumption was 129.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:48,030 INFO L168 Benchmark]: Witness Printer took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 983.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:48,033 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.02 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 15.29 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. * RCFGBuilder took 248.18 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1475.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 129.4 MB). Peak memory consumption was 129.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 983.7 MB. There was no memory consumed. 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 13 SDslu, 5 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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@442c0169=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...