./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1_false-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1_false-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccae6f392e1d87c0b193f39dee91a5c51306cb93 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 13:33:30,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 13:33:30,794 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 13:33:30,803 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 13:33:30,803 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 13:33:30,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 13:33:30,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 13:33:30,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 13:33:30,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 13:33:30,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 13:33:30,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 13:33:30,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 13:33:30,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 13:33:30,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 13:33:30,810 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 13:33:30,811 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 13:33:30,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 13:33:30,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 13:33:30,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 13:33:30,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 13:33:30,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 13:33:30,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 13:33:30,818 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 13:33:30,818 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 13:33:30,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 13:33:30,819 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 13:33:30,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 13:33:30,820 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 13:33:30,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 13:33:30,821 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 13:33:30,822 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 13:33:30,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 13:33:30,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 13:33:30,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 13:33:30,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 13:33:30,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 13:33:30,824 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 13:33:30,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 13:33:30,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 13:33:30,834 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 13:33:30,834 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 13:33:30,834 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 13:33:30,834 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 13:33:30,835 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 13:33:30,835 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 13:33:30,835 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 13:33:30,835 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 13:33:30,835 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 13:33:30,835 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 13:33:30,836 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 13:33:30,837 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 13:33:30,837 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 13:33:30,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 13:33:30,838 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/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(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccae6f392e1d87c0b193f39dee91a5c51306cb93 [2018-12-08 13:33:30,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 13:33:30,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 13:33:30,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 13:33:30,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 13:33:30,871 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 13:33:30,871 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1_false-unreach-call_true-no-overflow_true-termination.c [2018-12-08 13:33:30,910 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/data/4b0779333/af8b1eddb28a4d44962433829c5258c9/FLAGf9cb3061b [2018-12-08 13:33:31,238 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 13:33:31,238 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/sv-benchmarks/c/recursive/BallRajamani-SPIN2000-Fig1_false-unreach-call_true-no-overflow_true-termination.c [2018-12-08 13:33:31,242 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/data/4b0779333/af8b1eddb28a4d44962433829c5258c9/FLAGf9cb3061b [2018-12-08 13:33:31,645 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/data/4b0779333/af8b1eddb28a4d44962433829c5258c9 [2018-12-08 13:33:31,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 13:33:31,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 13:33:31,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 13:33:31,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 13:33:31,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 13:33:31,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409ee820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31, skipping insertion in model container [2018-12-08 13:33:31,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 13:33:31,665 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 13:33:31,750 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:33:31,752 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 13:33:31,762 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 13:33:31,772 INFO L195 MainTranslator]: Completed translation [2018-12-08 13:33:31,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31 WrapperNode [2018-12-08 13:33:31,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 13:33:31,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 13:33:31,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 13:33:31,773 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 13:33:31,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 13:33:31,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 13:33:31,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 13:33:31,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 13:33:31,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... [2018-12-08 13:33:31,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 13:33:31,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 13:33:31,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 13:33:31,795 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 13:33:31,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 13:33:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure A [2018-12-08 13:33:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2018-12-08 13:33:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 13:33:31,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 13:33:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 13:33:31,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 13:33:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 13:33:31,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 13:33:31,938 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 13:33:31,938 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-08 13:33:31,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:33:31 BoogieIcfgContainer [2018-12-08 13:33:31,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 13:33:31,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 13:33:31,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 13:33:31,941 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 13:33:31,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 01:33:31" (1/3) ... [2018-12-08 13:33:31,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683f156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 01:33:31, skipping insertion in model container [2018-12-08 13:33:31,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 01:33:31" (2/3) ... [2018-12-08 13:33:31,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3683f156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 01:33:31, skipping insertion in model container [2018-12-08 13:33:31,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:33:31" (3/3) ... [2018-12-08 13:33:31,943 INFO L112 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1_false-unreach-call_true-no-overflow_true-termination.c [2018-12-08 13:33:31,949 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 13:33:31,953 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 13:33:31,963 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 13:33:31,980 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 13:33:31,981 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 13:33:31,981 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 13:33:31,981 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 13:33:31,981 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 13:33:31,981 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 13:33:31,981 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 13:33:31,981 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 13:33:31,982 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 13:33:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-08 13:33:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-08 13:33:31,996 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 13:33:31,996 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 13:33:31,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 13:33:32,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:33:32,001 INFO L82 PathProgramCache]: Analyzing trace with hash -284235614, now seen corresponding path program 1 times [2018-12-08 13:33:32,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:33:32,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:33:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:33:32,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:33:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:33:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:33:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 13:33:32,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 13:33:32,108 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 13:33:32,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:33:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 13:33:32,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 13:33:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 13:33:32,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 13:33:32,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-08 13:33:32,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 13:33:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 13:33:32,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 13:33:32,171 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-12-08 13:33:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 13:33:32,242 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2018-12-08 13:33:32,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 13:33:32,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-08 13:33:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 13:33:32,248 INFO L225 Difference]: With dead ends: 45 [2018-12-08 13:33:32,249 INFO L226 Difference]: Without dead ends: 21 [2018-12-08 13:33:32,250 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 13:33:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-08 13:33:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-08 13:33:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-08 13:33:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-12-08 13:33:32,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2018-12-08 13:33:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 13:33:32,275 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-12-08 13:33:32,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 13:33:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-12-08 13:33:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 13:33:32,276 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 13:33:32,276 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 13:33:32,276 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 13:33:32,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 13:33:32,277 INFO L82 PathProgramCache]: Analyzing trace with hash -920468714, now seen corresponding path program 1 times [2018-12-08 13:33:32,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 13:33:32,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 13:33:32,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:33:32,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 13:33:32,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 13:33:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:33:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 13:33:32,310 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 13:33:32,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 01:33:32 BoogieIcfgContainer [2018-12-08 13:33:32,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 13:33:32,326 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 13:33:32,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 13:33:32,327 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 13:33:32,327 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 01:33:31" (3/4) ... [2018-12-08 13:33:32,328 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 13:33:32,355 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9651b036-1148-4856-8fd2-34228ecbd8ad/bin-2019/uautomizer/witness.graphml [2018-12-08 13:33:32,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 13:33:32,355 INFO L168 Benchmark]: Toolchain (without parser) took 708.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 961.4 MB in the beginning and 1.1 GB in the end (delta: -96.6 MB). Peak memory consumption was 32.9 MB. Max. memory is 11.5 GB. [2018-12-08 13:33:32,356 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:33:32,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.52 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 13:33:32,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:33:32,357 INFO L168 Benchmark]: Boogie Preprocessor took 9.98 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 13:33:32,357 INFO L168 Benchmark]: RCFGBuilder took 143.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-08 13:33:32,357 INFO L168 Benchmark]: TraceAbstraction took 387.33 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2018-12-08 13:33:32,358 INFO L168 Benchmark]: Witness Printer took 28.53 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. [2018-12-08 13:33:32,359 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.52 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.98 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 143.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -158.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 387.33 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * Witness Printer took 28.53 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int g; VAL [\old(g)=2, g=0] [L26] int g = __VERIFIER_nondet_int(); [L27] int h = !g; VAL [\old(g)=0, g=0, g=1, h=0] [L28] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, g=0] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, a1=1, a2=0, g=0] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, g=0] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, A(a2,a1)=0, a1=1, a2=0, g=1] [L28] RET A(g,h) VAL [\old(g)=0, A(g,h)=0, g=1, g=1, h=0] [L29] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, g=1] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, a1=1, a2=0, g=1] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, g=1] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, A(a2,a1)=0, a1=1, a2=0, g=1] [L29] RET A(g,h) VAL [\old(g)=0, A(g,h)=0, g=1, g=1, h=0] [L30] COND TRUE \read(g) VAL [\old(g)=0, g=1, g=1, h=0] [L31] __VERIFIER_error() VAL [\old(g)=0, g=1, g=1, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 4 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 8 SDslu, 43 SDs, 0 SdLazy, 36 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 1 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...