./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 0.1.24-6b5699a [2019-11-25 08:57:33,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:57:33,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:57:33,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:57:33,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:57:33,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:57:33,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:57:33,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:57:33,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:57:33,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:57:33,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:57:33,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:57:33,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:57:33,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:57:33,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:57:33,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:57:33,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:57:33,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:57:33,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:57:33,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:57:33,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:57:33,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:57:33,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:57:33,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:57:33,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:57:33,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:57:33,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:57:33,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:57:33,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:57:33,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:57:33,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:57:33,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:57:33,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:57:33,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:57:33,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:57:33,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:57:33,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:57:33,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:57:33,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:57:33,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:57:33,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:57:33,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:57:33,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:57:33,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:57:33,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:57:33,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:57:33,831 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:57:33,831 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:57:33,832 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:57:33,832 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:57:33,832 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:57:33,832 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:57:33,832 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:57:33,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:57:33,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:57:33,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:57:33,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:57:33,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:57:33,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:57:33,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:57:33,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:57:33,834 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:57:33,835 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:57:33,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:57:33,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:57:33,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:57:33,835 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:57:33,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:57:33,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:57:33,836 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:57:33,837 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:57:33,837 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_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 [2019-11-25 08:57:33,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:57:33,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:57:33,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:57:33,993 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:57:33,996 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:57:33,997 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07.c [2019-11-25 08:57:34,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/data/a0aacc053/1441ca4d37664f06b4954d92146660d7/FLAG6fb9f1954 [2019-11-25 08:57:34,404 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:57:34,404 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/sv-benchmarks/c/termination-restricted-15/Ex07.c [2019-11-25 08:57:34,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/data/a0aacc053/1441ca4d37664f06b4954d92146660d7/FLAG6fb9f1954 [2019-11-25 08:57:34,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/data/a0aacc053/1441ca4d37664f06b4954d92146660d7 [2019-11-25 08:57:34,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:57:34,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:57:34,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:34,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:57:34,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:57:34,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:34" (1/1) ... [2019-11-25 08:57:34,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45be6b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:34, skipping insertion in model container [2019-11-25 08:57:34,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:57:34" (1/1) ... [2019-11-25 08:57:34,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:57:34,829 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:57:35,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:35,018 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:57:35,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:57:35,120 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:57:35,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35 WrapperNode [2019-11-25 08:57:35,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:57:35,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:35,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:57:35,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:57:35,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:57:35,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:57:35,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:57:35,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:57:35,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... [2019-11-25 08:57:35,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:57:35,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:57:35,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:57:35,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:57:35,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 08:57:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:57:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:57:35,375 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:57:35,375 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:57:35,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35 BoogieIcfgContainer [2019-11-25 08:57:35,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:57:35,377 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:57:35,377 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:57:35,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:57:35,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:35,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:57:34" (1/3) ... [2019-11-25 08:57:35,381 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52ba269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:57:35, skipping insertion in model container [2019-11-25 08:57:35,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:35,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:57:35" (2/3) ... [2019-11-25 08:57:35,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52ba269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:57:35, skipping insertion in model container [2019-11-25 08:57:35,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:57:35,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35" (3/3) ... [2019-11-25 08:57:35,384 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2019-11-25 08:57:35,425 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:57:35,425 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:57:35,425 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:57:35,425 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:57:35,426 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:57:35,426 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:57:35,426 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:57:35,426 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:57:35,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:57:35,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:57:35,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:35,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:35,462 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:57:35,462 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:57:35,462 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:57:35,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-25 08:57:35,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:57:35,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:35,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:35,464 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:57:35,464 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:57:35,471 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-11-25 08:57:35,471 INFO L796 eck$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 [2019-11-25 08:57:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:57:35,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257707387] [2019-11-25 08:57:35,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,554 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-11-25 08:57:35,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009420877] [2019-11-25 08:57:35,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:35,608 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 08:57:35,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009420877] [2019-11-25 08:57:35,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:35,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:57:35,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908142561] [2019-11-25 08:57:35,616 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:57:35,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:35,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:57:35,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:57:35,633 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-25 08:57:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:35,665 INFO L93 Difference]: Finished difference Result 7 states and 10 transitions. [2019-11-25 08:57:35,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:57:35,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2019-11-25 08:57:35,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:57:35,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2019-11-25 08:57:35,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-25 08:57:35,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:57:35,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-25 08:57:35,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:57:35,675 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:57:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-25 08:57:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-25 08:57:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:57:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-25 08:57:35,699 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:57:35,699 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:57:35,699 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:57:35,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-25 08:57:35,700 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:57:35,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:35,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:35,700 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:57:35,701 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:57:35,701 INFO L794 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 [2019-11-25 08:57:35,701 INFO L796 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 [2019-11-25 08:57:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-25 08:57:35,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240693577] [2019-11-25 08:57:35,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,708 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,709 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-11-25 08:57:35,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464842709] [2019-11-25 08:57:35,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,720 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2019-11-25 08:57:35,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:35,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246485862] [2019-11-25 08:57:35,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:35,733 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:35,787 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:35,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:35,788 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:35,788 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:35,788 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:57:35,788 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:35,788 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:35,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:35,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2019-11-25 08:57:35,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:35,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:35,809 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 08:57:35,817 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 08:57:35,827 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 08:57:35,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:35,905 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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) [2019-11-25 08:57:35,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:57:35,919 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:35,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:57:35,928 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/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 08:57:35,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:57:35,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:57:35,950 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:57:35,950 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/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 [2019-11-25 08:57:35,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:57:35,962 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 [2019-11-25 08:57:35,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:57:35,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:57:35,979 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:57:35,981 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:35,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:35,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:35,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:35,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:35,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:35,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:35,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:35,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration2_Loop [2019-11-25 08:57:35,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:35,983 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:35,984 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 08:57:35,994 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 08:57:36,011 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 08:57:36,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:36,085 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 08:57:36,095 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 08:57:36,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:36,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:36,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:36,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:36,104 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:57:36,104 INFO L402 nArgumentSynthesizer]: A total of 2 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 08:57:36,111 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:36,122 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 08:57:36,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:36,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:36,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:36,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:36,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:36,128 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:36,128 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:36,137 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:36,145 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:57:36,146 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_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 [2019-11-25 08:57:36,158 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:57:36,158 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:57:36,158 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:36,159 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:57:36,164 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:57:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,209 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,224 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,243 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 08:57:36,246 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 08:57:36,246 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-25 08:57:36,295 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. [2019-11-25 08:57:36,297 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 [2019-11-25 08:57:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:57:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-25 08:57:36,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-25 08:57:36,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-25 08:57:36,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-25 08:57:36,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-11-25 08:57:36,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:57:36,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2019-11-25 08:57:36,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:57:36,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:57:36,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-25 08:57:36,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:36,304 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-25 08:57:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-25 08:57:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-25 08:57:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:57:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-25 08:57:36,306 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:57:36,307 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:57:36,307 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:57:36,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-25 08:57:36,307 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:57:36,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:36,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:36,308 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:57:36,308 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:57:36,308 INFO L794 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 [2019-11-25 08:57:36,309 INFO L796 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 [2019-11-25 08:57:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,309 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-25 08:57:36,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034005626] [2019-11-25 08:57:36,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,330 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2019-11-25 08:57:36,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475797162] [2019-11-25 08:57:36,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,347 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2019-11-25 08:57:36,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654556111] [2019-11-25 08:57:36,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,393 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:36,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:36,394 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:36,394 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:36,394 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:57:36,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:36,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:36,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:36,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2019-11-25 08:57:36,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:36,395 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:36,396 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 08:57:36,402 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 08:57:36,414 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 08:57:36,472 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:36,472 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 08:57:36,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:57:36,486 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 08:57:36,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:57:36,492 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/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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) [2019-11-25 08:57:36,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:57:36,511 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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 08:57:36,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:57:36,534 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 08:57:36,543 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:57:36,545 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:57:36,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:57:36,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:57:36,546 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:57:36,546 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:57:36,546 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:36,546 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:57:36,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:57:36,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration3_Loop [2019-11-25 08:57:36,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:57:36,546 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:57:36,548 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 08:57:36,561 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 08:57:36,564 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 08:57:36,613 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:57:36,613 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:36,618 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 08:57:36,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:57:36,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:57:36,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:57:36,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:57:36,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:57:36,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:57:36,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:57:36,627 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:57:36,630 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:57:36,630 INFO L444 ModelExtractionUtils]: 1 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_5ca5c500-067f-4e73-ab26-79f93699cf1b/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) [2019-11-25 08:57:36,638 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:57:36,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:57:36,638 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:57:36,639 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:57:36,641 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:57:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:36,674 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:57:36,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:57:36,693 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 08:57:36,693 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 08:57:36,693 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-25 08:57:36,708 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. [2019-11-25 08:57:36,709 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 [2019-11-25 08:57:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:57:36,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-25 08:57:36,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-25 08:57:36,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-25 08:57:36,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-25 08:57:36,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:57:36,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-11-25 08:57:36,712 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-25 08:57:36,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2019-11-25 08:57:36,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:57:36,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:57:36,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-11-25 08:57:36,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:57:36,713 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-25 08:57:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-11-25 08:57:36,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2019-11-25 08:57:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:57:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-25 08:57:36,715 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:57:36,715 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-25 08:57:36,715 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:57:36,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-25 08:57:36,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:57:36,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:57:36,716 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:57:36,716 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:57:36,716 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:57:36,717 INFO L794 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 [2019-11-25 08:57:36,717 INFO L796 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 [2019-11-25 08:57:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,717 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-25 08:57:36,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854278970] [2019-11-25 08:57:36,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,724 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2019-11-25 08:57:36,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045074276] [2019-11-25 08:57:36,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,730 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:36,730 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2019-11-25 08:57:36,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:36,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406094461] [2019-11-25 08:57:36,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:57:36,737 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:57:36,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:57:36 BoogieIcfgContainer [2019-11-25 08:57:36,789 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:57:36,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:36,790 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:36,790 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:36,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:57:35" (3/4) ... [2019-11-25 08:57:36,796 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:57:36,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ca5c500-067f-4e73-ab26-79f93699cf1b/bin/uautomizer/witness.graphml [2019-11-25 08:57:36,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:36,868 INFO L168 Benchmark]: Toolchain (without parser) took 2077.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 950.1 MB in the beginning and 967.2 MB in the end (delta: -17.1 MB). Peak memory consumption was 125.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:36,870 INFO L168 Benchmark]: CDTParser took 0.57 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 08:57:36,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:36,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.10 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 08:57:36,872 INFO L168 Benchmark]: Boogie Preprocessor took 27.27 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 08:57:36,872 INFO L168 Benchmark]: RCFGBuilder took 188.04 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:36,873 INFO L168 Benchmark]: BuchiAutomizer took 1412.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.6 MB in the end (delta: 145.9 MB). Peak memory consumption was 145.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:36,874 INFO L168 Benchmark]: Witness Printer took 76.09 ms. Allocated memory is still 1.2 GB. Free memory was 972.6 MB in the beginning and 967.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:36,877 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 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 330.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.10 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 27.27 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 188.04 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1412.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.6 MB in the end (delta: 145.9 MB). Peak memory consumption was 145.9 MB. Max. memory is 11.5 GB. * Witness Printer took 76.09 ms. Allocated memory is still 1.2 GB. Free memory was 972.6 MB in the beginning and 967.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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 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 1.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - 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@7eebf56=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...