./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/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 3bf945356a28265a842df89cdbf40bfa9a223140 ................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-0cd3be1 [2018-11-28 11:23:58,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:23:58,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:23:58,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:23:58,717 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:23:58,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:23:58,718 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:23:58,719 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:23:58,720 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:23:58,721 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:23:58,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:23:58,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:23:58,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:23:58,723 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:23:58,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:23:58,725 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:23:58,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:23:58,727 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:23:58,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:23:58,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:23:58,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:23:58,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:23:58,733 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:23:58,733 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:23:58,733 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:23:58,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:23:58,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:23:58,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:23:58,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:23:58,739 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:23:58,739 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:23:58,740 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:23:58,740 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:23:58,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:23:58,741 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:23:58,741 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:23:58,741 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 11:23:58,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:23:58,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:23:58,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 11:23:58,752 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 11:23:58,753 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:23:58,753 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:23:58,753 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:23:58,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:23:58,753 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:23:58,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:23:58,755 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:23:58,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 11:23:58,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:23:58,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:23:58,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 11:23:58,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 11:23:58,756 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 11:23:58,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 11:23:58,757 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_be91fd1b-10f5-4c47-a896-740bb292bf53/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 -> 3bf945356a28265a842df89cdbf40bfa9a223140 [2018-11-28 11:23:58,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:23:58,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:23:58,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:23:58,788 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:23:58,788 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:23:58,789 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-28 11:23:58,824 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/data/4453a7860/cdae1ee420794c42aa060e5b5dec3177/FLAG6e5c613e3 [2018-11-28 11:23:59,215 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:23:59,216 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/sv-benchmarks/c/recursive-simple/id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-28 11:23:59,220 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/data/4453a7860/cdae1ee420794c42aa060e5b5dec3177/FLAG6e5c613e3 [2018-11-28 11:23:59,232 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/data/4453a7860/cdae1ee420794c42aa060e5b5dec3177 [2018-11-28 11:23:59,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:23:59,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:23:59,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:23:59,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:23:59,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:23:59,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223f0c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59, skipping insertion in model container [2018-11-28 11:23:59,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:23:59,261 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:23:59,363 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:23:59,366 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:23:59,374 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:23:59,382 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:23:59,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59 WrapperNode [2018-11-28 11:23:59,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:23:59,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:23:59,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:23:59,383 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:23:59,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:23:59,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:23:59,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:23:59,395 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:23:59,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... [2018-11-28 11:23:59,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:23:59,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:23:59,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:23:59,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:23:59,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/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 [2018-11-28 11:23:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 11:23:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 11:23:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:23:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:23:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 11:23:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 11:23:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-28 11:23:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-28 11:23:59,562 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:23:59,562 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 11:23:59,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:59 BoogieIcfgContainer [2018-11-28 11:23:59,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:23:59,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 11:23:59,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 11:23:59,565 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 11:23:59,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:23:59" (1/3) ... [2018-11-28 11:23:59,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b8da3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:23:59, skipping insertion in model container [2018-11-28 11:23:59,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:23:59" (2/3) ... [2018-11-28 11:23:59,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b8da3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:23:59, skipping insertion in model container [2018-11-28 11:23:59,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:59" (3/3) ... [2018-11-28 11:23:59,567 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b3_o2_false-unreach-call_true-termination_true-no-overflow.c [2018-11-28 11:23:59,573 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 11:23:59,577 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 11:23:59,588 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 11:23:59,607 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:23:59,607 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 11:23:59,607 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 11:23:59,607 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 11:23:59,607 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:23:59,607 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:23:59,607 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 11:23:59,607 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:23:59,608 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 11:23:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-28 11:23:59,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 11:23:59,621 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:59,621 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:59,623 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:23:59,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:59,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2018-11-28 11:23:59,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:59,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:59,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:59,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:23:59,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:23:59,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:23:59,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:23:59,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:23:59,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:59,757 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-11-28 11:23:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:59,784 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 11:23:59,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:23:59,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 11:23:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:59,791 INFO L225 Difference]: With dead ends: 33 [2018-11-28 11:23:59,792 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 11:23:59,794 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 11:23:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-28 11:23:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 11:23:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-28 11:23:59,818 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2018-11-28 11:23:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:59,819 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-28 11:23:59,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:23:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-28 11:23:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 11:23:59,820 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:59,820 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:59,821 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:23:59,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2018-11-28 11:23:59,821 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:59,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:59,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:59,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 11:23:59,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:23:59,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:23:59,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:23:59,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:23:59,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:59,879 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-11-28 11:23:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:23:59,897 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-11-28 11:23:59,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:23:59,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-28 11:23:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:23:59,898 INFO L225 Difference]: With dead ends: 31 [2018-11-28 11:23:59,898 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 11:23:59,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:23:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 11:23:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-28 11:23:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 11:23:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-28 11:23:59,903 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2018-11-28 11:23:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:23:59,904 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-28 11:23:59,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:23:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-28 11:23:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 11:23:59,904 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:23:59,904 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:23:59,905 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:23:59,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:23:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2018-11-28 11:23:59,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:23:59,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:23:59,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:23:59,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:23:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:23:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 11:23:59,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:23:59,979 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/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 [2018-11-28 11:23:59,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:00,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:24:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 11:24:00,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:24:00,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-11-28 11:24:00,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 11:24:00,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 11:24:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 11:24:00,105 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2018-11-28 11:24:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:00,137 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-28 11:24:00,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 11:24:00,138 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-11-28 11:24:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:00,138 INFO L225 Difference]: With dead ends: 27 [2018-11-28 11:24:00,138 INFO L226 Difference]: Without dead ends: 23 [2018-11-28 11:24:00,139 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-28 11:24:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-28 11:24:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-28 11:24:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 11:24:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-28 11:24:00,143 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-11-28 11:24:00,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:00,144 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-28 11:24:00,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 11:24:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-28 11:24:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 11:24:00,144 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:00,145 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:00,145 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:24:00,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:00,145 INFO L82 PathProgramCache]: Analyzing trace with hash 376843494, now seen corresponding path program 1 times [2018-11-28 11:24:00,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:00,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:00,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:00,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:00,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:24:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 11:24:00,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:24:00,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 11:24:00,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 11:24:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:24:00,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:24:00,185 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2018-11-28 11:24:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:24:00,211 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-11-28 11:24:00,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 11:24:00,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-28 11:24:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 11:24:00,212 INFO L225 Difference]: With dead ends: 29 [2018-11-28 11:24:00,213 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 11:24:00,213 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:24:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 11:24:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-28 11:24:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 11:24:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-28 11:24:00,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 27 [2018-11-28 11:24:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 11:24:00,217 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-28 11:24:00,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 11:24:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-28 11:24:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 11:24:00,218 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 11:24:00,218 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:24:00,218 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 11:24:00,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:24:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash 405472645, now seen corresponding path program 2 times [2018-11-28 11:24:00,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:24:00,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:24:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:00,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:24:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:24:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:24:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:24:00,252 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 11:24:00,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:24:00 BoogieIcfgContainer [2018-11-28 11:24:00,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 11:24:00,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:24:00,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:24:00,268 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:24:00,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:23:59" (3/4) ... [2018-11-28 11:24:00,270 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 11:24:00,298 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_be91fd1b-10f5-4c47-a896-740bb292bf53/bin-2019/uautomizer/witness.graphml [2018-11-28 11:24:00,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:24:00,298 INFO L168 Benchmark]: Toolchain (without parser) took 1063.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -109.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:00,299 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:24:00,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.09 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:00,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.85 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:24:00,300 INFO L168 Benchmark]: Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:24:00,300 INFO L168 Benchmark]: RCFGBuilder took 153.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:00,300 INFO L168 Benchmark]: TraceAbstraction took 705.12 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: 79.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:24:00,301 INFO L168 Benchmark]: Witness Printer took 29.62 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. [2018-11-28 11:24:00,303 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.09 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 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 11.85 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.49 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 153.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.6 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -200.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 705.12 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: 79.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 11.5 GB. * Witness Printer took 29.62 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: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL, EXPR id(input) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id((unsigned int)x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=1, id((unsigned int)x-1)=0, x=1] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L6] RET, EXPR id((unsigned int)x-1) VAL [\old(x)=2, id((unsigned int)x-1)=1, x=2] [L6] int ret = id((unsigned int)x-1) + 1; [L7] COND FALSE !(ret > 3) [L8] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L13] RET, EXPR id(input) VAL [id(input)=2, input=2] [L13] int result = id(input); [L14] COND TRUE result == 2 VAL [input=2, result=2] [L15] __VERIFIER_error() VAL [input=2, result=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 78 SDtfs, 6 SDslu, 263 SDs, 0 SdLazy, 55 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 2967 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...