./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex03_false-unreach-call_true-termination.i --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_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex03_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2e579f5e76b27964b32122c43a8eb63aefa1ba0 .................................................................................................................................................................................................................................................................................... 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 [2018-12-09 12:06:37,901 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:06:37,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:06:37,909 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:06:37,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:06:37,909 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:06:37,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:06:37,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:06:37,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:06:37,912 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:06:37,913 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:06:37,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:06:37,913 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:06:37,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:06:37,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:06:37,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:06:37,915 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:06:37,916 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:06:37,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:06:37,918 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:06:37,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:06:37,919 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:06:37,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:06:37,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:06:37,920 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:06:37,921 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:06:37,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:06:37,922 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:06:37,922 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:06:37,923 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:06:37,923 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:06:37,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:06:37,923 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:06:37,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:06:37,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:06:37,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:06:37,924 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 12:06:37,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:06:37,932 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:06:37,932 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 12:06:37,932 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 12:06:37,932 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 12:06:37,932 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 12:06:37,933 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 12:06:37,934 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 12:06:37,934 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 12:06:37,935 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:06:37,935 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 12:06:37,936 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 12:06:37,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 12:06:37,937 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan 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 -> Taipan 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 -> a2e579f5e76b27964b32122c43a8eb63aefa1ba0 [2018-12-09 12:06:37,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:06:37,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:06:37,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:06:37,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:06:37,965 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:06:37,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/../../sv-benchmarks/c/loops/trex03_false-unreach-call_true-termination.i [2018-12-09 12:06:38,002 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/data/c35ea670a/e51392f9fa394c8fbdff25838c50f2e6/FLAG46b21cdc0 [2018-12-09 12:06:38,402 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:06:38,403 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/sv-benchmarks/c/loops/trex03_false-unreach-call_true-termination.i [2018-12-09 12:06:38,406 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/data/c35ea670a/e51392f9fa394c8fbdff25838c50f2e6/FLAG46b21cdc0 [2018-12-09 12:06:38,414 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/data/c35ea670a/e51392f9fa394c8fbdff25838c50f2e6 [2018-12-09 12:06:38,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:06:38,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:06:38,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:06:38,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:06:38,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:06:38,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c56171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38, skipping insertion in model container [2018-12-09 12:06:38,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:06:38,433 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:06:38,516 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:06:38,518 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:06:38,528 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:06:38,535 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:06:38,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38 WrapperNode [2018-12-09 12:06:38,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:06:38,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:06:38,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:06:38,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:06:38,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:06:38,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:06:38,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:06:38,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:06:38,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... [2018-12-09 12:06:38,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:06:38,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:06:38,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:06:38,560 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:06:38,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/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 [2018-12-09 12:06:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 12:06:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 12:06:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:06:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:06:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 12:06:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 12:06:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 12:06:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 12:06:38,722 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:06:38,723 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 12:06:38,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:38 BoogieIcfgContainer [2018-12-09 12:06:38,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:06:38,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 12:06:38,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 12:06:38,727 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 12:06:38,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:06:38" (1/3) ... [2018-12-09 12:06:38,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593bbd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:38, skipping insertion in model container [2018-12-09 12:06:38,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:06:38" (2/3) ... [2018-12-09 12:06:38,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593bbd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:06:38, skipping insertion in model container [2018-12-09 12:06:38,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:38" (3/3) ... [2018-12-09 12:06:38,729 INFO L112 eAbstractionObserver]: Analyzing ICFG trex03_false-unreach-call_true-termination.i [2018-12-09 12:06:38,738 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 12:06:38,742 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 12:06:38,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 12:06:38,771 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 12:06:38,771 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 12:06:38,771 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 12:06:38,771 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:06:38,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:06:38,772 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 12:06:38,772 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:06:38,772 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 12:06:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-12-09 12:06:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:06:38,785 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:06:38,785 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:06:38,787 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:06:38,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:06:38,790 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2018-12-09 12:06:38,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:06:38,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:06:38,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:06:38,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:06:38,822 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:06:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:06:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:06:38,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:06:38,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 12:06:38,857 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 12:06:38,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 12:06:38,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 12:06:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:06:38,869 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-12-09 12:06:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:06:38,881 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-12-09 12:06:38,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 12:06:38,882 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-09 12:06:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 12:06:38,886 INFO L225 Difference]: With dead ends: 33 [2018-12-09 12:06:38,886 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 12:06:38,888 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 12:06:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 12:06:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 12:06:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 12:06:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-12-09 12:06:38,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2018-12-09 12:06:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 12:06:38,909 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-12-09 12:06:38,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 12:06:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-12-09 12:06:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:06:38,909 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 12:06:38,909 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 12:06:38,910 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 12:06:38,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:06:38,910 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2018-12-09 12:06:38,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 12:06:38,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:06:38,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:06:38,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:06:38,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 12:06:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:06:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:06:38,942 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 12:06:38,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:06:38 BoogieIcfgContainer [2018-12-09 12:06:38,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 12:06:38,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:06:38,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:06:38,956 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:06:38,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:06:38" (3/4) ... [2018-12-09 12:06:38,957 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 12:06:38,982 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7fb855e6-805f-4512-9aa2-86e02f663bef/bin-2019/utaipan/witness.graphml [2018-12-09 12:06:38,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:06:38,983 INFO L168 Benchmark]: Toolchain (without parser) took 566.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 957.8 MB in the beginning and 1.1 GB in the end (delta: -125.3 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:06:38,984 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:06:38,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.32 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:06:38,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:06:38,985 INFO L168 Benchmark]: Boogie Preprocessor took 12.16 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 12:06:38,986 INFO L168 Benchmark]: RCFGBuilder took 163.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:06:38,986 INFO L168 Benchmark]: TraceAbstraction took 231.45 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:06:38,986 INFO L168 Benchmark]: Witness Printer took 26.66 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. [2018-12-09 12:06:38,988 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.32 ms. Allocated memory is still 1.0 GB. Free memory was 957.8 MB in the beginning and 947.0 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 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.16 ms. Allocated memory is still 1.0 GB. Free memory was 947.0 MB in the beginning and 941.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -168.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 231.45 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.66 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L12] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L12] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L13] unsigned int d1=1, d2=1, d3=1; [L14] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L14] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L15] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=4294967298, c2=4294967299, d1=1, d2=1, d3=1, x1=4294967297, x2=0, x3=0] [L23] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...