./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/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 6b853b7a72b17d5b4054a16a7ba98c728e55c23b .......................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 11:45:09,704 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:45:09,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:45:09,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:45:09,716 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:45:09,717 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:45:09,718 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:45:09,720 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:45:09,721 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:45:09,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:45:09,723 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:45:09,723 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:45:09,724 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:45:09,725 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:45:09,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:45:09,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:45:09,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:45:09,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:45:09,730 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:45:09,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:45:09,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:45:09,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:45:09,736 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:45:09,736 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:45:09,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:45:09,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:45:09,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:45:09,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:45:09,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:45:09,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:45:09,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:45:09,741 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:45:09,741 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:45:09,741 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:45:09,742 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:45:09,743 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:45:09,743 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 11:45:09,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:45:09,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:45:09,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:45:09,757 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 11:45:09,757 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:45:09,758 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:45:09,758 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:45:09,758 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:45:09,758 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:45:09,758 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:45:09,759 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:45:09,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:45:09,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:45:09,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:45:09,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:45:09,760 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:45:09,760 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:45:09,761 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:45:09,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:45:09,761 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:45:09,761 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:45:09,761 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:45:09,762 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:45:09,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:45:09,762 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_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/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 -> 6b853b7a72b17d5b4054a16a7ba98c728e55c23b [2018-11-10 11:45:09,794 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:45:09,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:45:09,807 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:45:09,809 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:45:09,809 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:45:09,810 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-11-10 11:45:09,864 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/data/7a389b686/20aeead508bc4d19aaef8fb970c8a51b/FLAG660cfe085 [2018-11-10 11:45:10,237 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:45:10,237 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/sv-benchmarks/c/loop-invgen/id_trans_false-unreach-call_true-termination.i [2018-11-10 11:45:10,242 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/data/7a389b686/20aeead508bc4d19aaef8fb970c8a51b/FLAG660cfe085 [2018-11-10 11:45:10,254 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/data/7a389b686/20aeead508bc4d19aaef8fb970c8a51b [2018-11-10 11:45:10,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:45:10,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 11:45:10,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:45:10,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:45:10,262 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:45:10,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5276b910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10, skipping insertion in model container [2018-11-10 11:45:10,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:45:10,291 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:45:10,415 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:45:10,418 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:45:10,430 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:45:10,442 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:45:10,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10 WrapperNode [2018-11-10 11:45:10,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:45:10,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:45:10,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:45:10,443 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:45:10,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... [2018-11-10 11:45:10,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:45:10,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:45:10,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:45:10,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:45:10,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/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 [2018-11-10 11:45:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:45:10,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:45:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 11:45:10,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:45:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 11:45:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 11:45:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 11:45:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 11:45:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:45:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:45:10,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:45:10,688 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:45:10,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:10 BoogieIcfgContainer [2018-11-10 11:45:10,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:45:10,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:45:10,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:45:10,691 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:45:10,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:45:10" (1/3) ... [2018-11-10 11:45:10,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e49b78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:10, skipping insertion in model container [2018-11-10 11:45:10,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:10" (2/3) ... [2018-11-10 11:45:10,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e49b78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:10, skipping insertion in model container [2018-11-10 11:45:10,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:10" (3/3) ... [2018-11-10 11:45:10,694 INFO L112 eAbstractionObserver]: Analyzing ICFG id_trans_false-unreach-call_true-termination.i [2018-11-10 11:45:10,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:45:10,707 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:45:10,717 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:45:10,738 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:45:10,738 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:45:10,738 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:45:10,738 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:45:10,738 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:45:10,739 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:45:10,739 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:45:10,739 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:45:10,739 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:45:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-10 11:45:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 11:45:10,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:10,755 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:10,757 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:10,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash -243865802, now seen corresponding path program 1 times [2018-11-10 11:45:10,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:45:10,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:45:10,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:10,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:10,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:10,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:45:10,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:45:10,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:45:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:45:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:45:10,922 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-11-10 11:45:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:11,013 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-11-10 11:45:11,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:45:11,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-10 11:45:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:11,021 INFO L225 Difference]: With dead ends: 48 [2018-11-10 11:45:11,021 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 11:45:11,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:45:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 11:45:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-10 11:45:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-10 11:45:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-10 11:45:11,055 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2018-11-10 11:45:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:11,055 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-10 11:45:11,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:45:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-10 11:45:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 11:45:11,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:11,057 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:11,057 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:11,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash 662571400, now seen corresponding path program 1 times [2018-11-10 11:45:11,058 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:45:11,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:45:11,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:11,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:11,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:11,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:11,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:11,167 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/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 [2018-11-10 11:45:11,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:11,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:45:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:11,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 11:45:11,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2018-11-10 11:45:11,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 11:45:11,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 11:45:11,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 11:45:11,291 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2018-11-10 11:45:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:11,383 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-11-10 11:45:11,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 11:45:11,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-10 11:45:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:11,384 INFO L225 Difference]: With dead ends: 29 [2018-11-10 11:45:11,384 INFO L226 Difference]: Without dead ends: 27 [2018-11-10 11:45:11,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-10 11:45:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-10 11:45:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-10 11:45:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-10 11:45:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-11-10 11:45:11,390 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2018-11-10 11:45:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:11,390 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-11-10 11:45:11,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 11:45:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-11-10 11:45:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 11:45:11,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:11,391 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:11,392 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:11,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash -366649848, now seen corresponding path program 1 times [2018-11-10 11:45:11,392 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:45:11,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:45:11,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:11,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:11,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:45:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:45:11,443 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:45:11,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:45:11 BoogieIcfgContainer [2018-11-10 11:45:11,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:45:11,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:45:11,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:45:11,466 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:45:11,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:10" (3/4) ... [2018-11-10 11:45:11,469 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:45:11,508 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a9ea087e-37cf-44a7-ac9e-a2c62977c73c/bin-2019/uautomizer/witness.graphml [2018-11-10 11:45:11,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:45:11,509 INFO L168 Benchmark]: Toolchain (without parser) took 1251.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -88.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:11,510 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:45:11,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:11,511 INFO L168 Benchmark]: Boogie Preprocessor took 20.48 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:45:11,511 INFO L168 Benchmark]: RCFGBuilder took 224.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:11,511 INFO L168 Benchmark]: TraceAbstraction took 776.56 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: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:11,512 INFO L168 Benchmark]: Witness Printer took 42.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:11,514 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.65 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.48 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -171.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 776.56 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: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 11.5 GB. * Witness Printer took 42.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] __VERIFIER_assert( 0 <= j) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] __VERIFIER_assert( j < material_length ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=8, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 21 SDslu, 129 SDs, 0 SdLazy, 93 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1287 SizeOfPredicates, 2 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...