./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/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 9c3e090d52ebca0d111383f72b5851cb29661ded ................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 11:22:36,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:22:36,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:22:36,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:22:36,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:22:36,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:22:36,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:22:36,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:22:36,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:22:36,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:22:36,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:22:36,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:22:36,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:22:36,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:22:36,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:22:36,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:22:36,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:22:36,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:22:36,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:22:36,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:22:36,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:22:36,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:22:36,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:22:36,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:22:36,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:22:36,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:22:36,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:22:36,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:22:36,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:22:36,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:22:36,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:22:36,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:22:36,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:22:36,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:22:36,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:22:36,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:22:36,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:22:36,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:22:36,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:22:36,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:22:36,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:22:36,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:22:36,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:22:36,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:22:36,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:22:36,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:22:36,060 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:22:36,061 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:22:36,061 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:22:36,061 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:22:36,061 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:22:36,061 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:22:36,061 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:22:36,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:22:36,062 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:22:36,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:22:36,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:22:36,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:22:36,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:22:36,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:22:36,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:22:36,063 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:22:36,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:22:36,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:22:36,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:22:36,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:22:36,064 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:22:36,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:22:36,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:22:36,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:22:36,065 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:22:36,066 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:22:36,066 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_70963d86-3697-485a-a808-6ba5ca4b7258/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 -> 9c3e090d52ebca0d111383f72b5851cb29661ded [2019-12-07 11:22:36,171 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:22:36,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:22:36,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:22:36,185 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:22:36,185 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:22:36,186 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_02.c [2019-12-07 11:22:36,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/data/bc0518a78/f4766370501b4487b1451b1ca11830ea/FLAG520cf5fd3 [2019-12-07 11:22:36,543 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:22:36,544 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/sv-benchmarks/c/termination-restricted-15/NO_02.c [2019-12-07 11:22:36,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/data/bc0518a78/f4766370501b4487b1451b1ca11830ea/FLAG520cf5fd3 [2019-12-07 11:22:36,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/data/bc0518a78/f4766370501b4487b1451b1ca11830ea [2019-12-07 11:22:36,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:22:36,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:22:36,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:22:36,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:22:36,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:22:36,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545433eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36, skipping insertion in model container [2019-12-07 11:22:36,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:22:36,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:22:36,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:22:36,674 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:22:36,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:22:36,725 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:22:36,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36 WrapperNode [2019-12-07 11:22:36,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:22:36,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:22:36,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:22:36,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:22:36,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:22:36,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:22:36,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:22:36,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:22:36,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... [2019-12-07 11:22:36,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:22:36,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:22:36,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:22:36,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:22:36,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/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 [2019-12-07 11:22:36,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:22:36,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:22:36,883 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:22:36,883 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 11:22:36,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:22:36 BoogieIcfgContainer [2019-12-07 11:22:36,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:22:36,885 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:22:36,885 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:22:36,887 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:22:36,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:22:36,887 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:22:36" (1/3) ... [2019-12-07 11:22:36,888 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7aebfac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:22:36, skipping insertion in model container [2019-12-07 11:22:36,888 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:22:36,888 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:22:36" (2/3) ... [2019-12-07 11:22:36,889 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7aebfac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:22:36, skipping insertion in model container [2019-12-07 11:22:36,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:22:36,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:22:36" (3/3) ... [2019-12-07 11:22:36,890 INFO L371 chiAutomizerObserver]: Analyzing ICFG NO_02.c [2019-12-07 11:22:36,918 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:22:36,918 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:22:36,918 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:22:36,919 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:22:36,919 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:22:36,919 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:22:36,919 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:22:36,919 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:22:36,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 11:22:36,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 11:22:36,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:22:36,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:22:36,944 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:22:36,944 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:22:36,944 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:22:36,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 11:22:36,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 11:22:36,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:22:36,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:22:36,945 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:22:36,945 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:22:36,950 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 8#L10-2true [2019-12-07 11:22:36,950 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 100);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 < 1); 10#L12-3true main_~i~0 := 1 + main_~i~0; 8#L10-2true [2019-12-07 11:22:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:22:36,954 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 11:22:36,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:22:36,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404868554] [2019-12-07 11:22:36,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:22:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:22:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:22:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 11:22:37,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:22:37,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444907905] [2019-12-07 11:22:37,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:22:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:22:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:22:37,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444907905] [2019-12-07 11:22:37,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:22:37,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:22:37,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997239650] [2019-12-07 11:22:37,058 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 11:22:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:22:37,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:22:37,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:22:37,070 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-12-07 11:22:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:22:37,079 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-12-07 11:22:37,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:22:37,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2019-12-07 11:22:37,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:22:37,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 3 states and 3 transitions. [2019-12-07 11:22:37,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 11:22:37,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 11:22:37,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2019-12-07 11:22:37,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:22:37,085 INFO L688 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-12-07 11:22:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2019-12-07 11:22:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2019-12-07 11:22:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:22:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-12-07 11:22:37,102 INFO L711 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-12-07 11:22:37,102 INFO L591 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-12-07 11:22:37,102 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:22:37,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2019-12-07 11:22:37,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:22:37,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:22:37,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:22:37,103 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:22:37,103 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 11:22:37,103 INFO L794 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 26#L10-2 assume !!(main_~i~0 < 100);main_~j~0 := 0; 24#L12-2 [2019-12-07 11:22:37,104 INFO L796 eck$LassoCheckResult]: Loop: 24#L12-2 assume !!(main_~j~0 < 1);main_~j~0 := main_~j~0; 24#L12-2 [2019-12-07 11:22:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:22:37,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 11:22:37,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:22:37,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603837259] [2019-12-07 11:22:37,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:22:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,109 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:22:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:22:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 11:22:37,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:22:37,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272191134] [2019-12-07 11:22:37,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:22:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,115 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:22:37,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:22:37,116 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 11:22:37,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:22:37,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358913181] [2019-12-07 11:22:37,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:22:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:22:37,122 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:22:37,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:22:37 BoogieIcfgContainer [2019-12-07 11:22:37,168 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:22:37,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:22:37,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:22:37,169 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:22:37,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:22:36" (3/4) ... [2019-12-07 11:22:37,171 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 11:22:37,195 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70963d86-3697-485a-a808-6ba5ca4b7258/bin/uautomizer/witness.graphml [2019-12-07 11:22:37,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:22:37,197 INFO L168 Benchmark]: Toolchain (without parser) took 637.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 946.2 MB in the beginning and 1.0 GB in the end (delta: -98.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:22:37,197 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:22:37,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:22:37,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:22:37,198 INFO L168 Benchmark]: Boogie Preprocessor took 12.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:22:37,199 INFO L168 Benchmark]: RCFGBuilder took 125.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:22:37,199 INFO L168 Benchmark]: BuchiAutomizer took 283.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:22:37,199 INFO L168 Benchmark]: Witness Printer took 26.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:22:37,202 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 125.53 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 283.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. 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 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 12]: 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 {\result=0, i=0, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 12]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] i = 0 [L10] COND TRUE i < 100 [L11] j = 0 Loop: [L12] COND TRUE j < 1 [L13] j = j+0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...