./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/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 5a78e5ac8a70d10b48fa6c5955c8640de4def14b .................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 16:35:59,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:35:59,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:35:59,610 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:35:59,610 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:35:59,611 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:35:59,611 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:35:59,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:35:59,614 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:35:59,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:35:59,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:35:59,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:35:59,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:35:59,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:35:59,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:35:59,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:35:59,619 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:35:59,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:35:59,621 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:35:59,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:35:59,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:35:59,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:35:59,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:35:59,625 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:35:59,626 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:35:59,626 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:35:59,627 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:35:59,627 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:35:59,628 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:35:59,629 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:35:59,629 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:35:59,629 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:35:59,629 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:35:59,630 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:35:59,630 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:35:59,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:35:59,631 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 16:35:59,640 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:35:59,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:35:59,641 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:35:59,641 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 16:35:59,641 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 16:35:59,641 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 16:35:59,641 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 16:35:59,641 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 16:35:59,642 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 16:35:59,642 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 16:35:59,642 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 16:35:59,642 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 16:35:59,642 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 16:35:59,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:35:59,643 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:35:59,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:35:59,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:35:59,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:35:59,645 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 16:35:59,646 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_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/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 -> 5a78e5ac8a70d10b48fa6c5955c8640de4def14b [2018-11-18 16:35:59,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:35:59,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:35:59,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:35:59,679 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:35:59,679 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:35:59,680 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 16:35:59,718 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/data/f336985aa/0abcee43b5a1498d97151218df38dac8/FLAG8355b2c1c [2018-11-18 16:36:00,016 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:36:00,017 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/sv-benchmarks/c/ldv-regression/test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 16:36:00,021 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/data/f336985aa/0abcee43b5a1498d97151218df38dac8/FLAG8355b2c1c [2018-11-18 16:36:00,030 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/data/f336985aa/0abcee43b5a1498d97151218df38dac8 [2018-11-18 16:36:00,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:36:00,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 16:36:00,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:36:00,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:36:00,037 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:36:00,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00, skipping insertion in model container [2018-11-18 16:36:00,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:36:00,056 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:36:00,154 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:36:00,156 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:36:00,163 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:36:00,171 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:36:00,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00 WrapperNode [2018-11-18 16:36:00,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:36:00,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 16:36:00,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 16:36:00,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 16:36:00,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 16:36:00,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:36:00,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:36:00,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:36:00,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... [2018-11-18 16:36:00,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:36:00,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:36:00,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:36:00,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:36:00,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/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 [2018-11-18 16:36:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:36:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:36:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2018-11-18 16:36:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2018-11-18 16:36:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 16:36:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 16:36:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:36:00,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:36:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:36:00,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:36:00,378 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:36:00,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:00 BoogieIcfgContainer [2018-11-18 16:36:00,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:36:00,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:36:00,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:36:00,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:36:00,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:36:00" (1/3) ... [2018-11-18 16:36:00,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcab3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:36:00, skipping insertion in model container [2018-11-18 16:36:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:36:00" (2/3) ... [2018-11-18 16:36:00,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcab3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:36:00, skipping insertion in model container [2018-11-18 16:36:00,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:00" (3/3) ... [2018-11-18 16:36:00,385 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int_true-termination.c_false-unreach-call.i [2018-11-18 16:36:00,393 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:36:00,399 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:36:00,412 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:36:00,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:36:00,437 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:36:00,437 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:36:00,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:36:00,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:36:00,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:36:00,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:36:00,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:36:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 16:36:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 16:36:00,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:00,458 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:00,460 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:36:00,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1835521858, now seen corresponding path program 1 times [2018-11-18 16:36:00,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:00,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:00,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:00,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:00,505 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:00,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:36:00,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 16:36:00,624 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 16:36:00,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:36:00,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:36:00,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:36:00,641 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2018-11-18 16:36:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:00,723 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2018-11-18 16:36:00,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:36:00,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-11-18 16:36:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:00,732 INFO L225 Difference]: With dead ends: 46 [2018-11-18 16:36:00,732 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 16:36:00,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:36:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 16:36:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-18 16:36:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 16:36:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 16:36:00,761 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2018-11-18 16:36:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:00,761 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 16:36:00,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:36:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 16:36:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:36:00,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:00,762 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:00,762 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:36:00,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -932126179, now seen corresponding path program 1 times [2018-11-18 16:36:00,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:00,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:00,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:00,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:00,764 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:00,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:36:00,836 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 16:36:00,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-11-18 16:36:00,838 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [9], [10], [16], [20], [26], [33], [35], [36], [37], [39], [40] [2018-11-18 16:36:00,858 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 16:36:00,859 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 16:36:00,968 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 16:36:00,969 INFO L272 AbstractInterpreter]: Visited 15 different actions 33 times. Merged at 3 different actions 8 times. Never widened. Performed 53 root evaluator evaluations with a maximum evaluation depth of 5. Performed 53 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-18 16:36:00,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:00,978 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 16:36:00,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:36:00,978 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/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 [2018-11-18 16:36:00,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:00,984 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 16:36:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:36:01,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:36:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:01,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 16:36:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:36:01,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 16:36:01,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2018-11-18 16:36:01,137 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 16:36:01,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 16:36:01,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:36:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 16:36:01,139 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2018-11-18 16:36:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:36:01,218 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-18 16:36:01,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:36:01,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2018-11-18 16:36:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:36:01,220 INFO L225 Difference]: With dead ends: 34 [2018-11-18 16:36:01,220 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 16:36:01,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-18 16:36:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 16:36:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-11-18 16:36:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 16:36:01,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-18 16:36:01,224 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2018-11-18 16:36:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:36:01,224 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-18 16:36:01,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 16:36:01,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-18 16:36:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 16:36:01,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:36:01,225 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:36:01,225 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:36:01,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:36:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 362131422, now seen corresponding path program 2 times [2018-11-18 16:36:01,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 16:36:01,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:01,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:36:01,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:36:01,227 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 16:36:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:36:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:36:01,249 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 16:36:01,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:36:01 BoogieIcfgContainer [2018-11-18 16:36:01,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:36:01,268 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:36:01,268 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:36:01,269 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:36:01,269 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:36:00" (3/4) ... [2018-11-18 16:36:01,271 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:36:01,301 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9eb3326e-58bb-4c6e-98ed-fd7b50a379b4/bin-2019/utaipan/witness.graphml [2018-11-18 16:36:01,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:36:01,302 INFO L168 Benchmark]: Toolchain (without parser) took 1269.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 959.3 MB in the beginning and 1.0 GB in the end (delta: -65.3 MB). Peak memory consumption was 56.9 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:01,303 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:36:01,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:01,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.85 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:36:01,304 INFO L168 Benchmark]: Boogie Preprocessor took 16.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:01,304 INFO L168 Benchmark]: RCFGBuilder took 178.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:01,305 INFO L168 Benchmark]: TraceAbstraction took 888.94 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: 83.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:36:01,305 INFO L168 Benchmark]: Witness Printer took 32.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:36:01,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 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 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.25 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 888.94 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: 83.5 MB). Peak memory consumption was 83.5 MB. Max. memory is 11.5 GB. * Witness Printer took 32.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; VAL [i=0] [L24] COND TRUE i<5 [L25] i++ VAL [i=1] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=1] [L24] COND TRUE i<5 [L25] i++ VAL [i=2] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] COND TRUE, RET (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] check_error(i!=3) VAL [i=2] [L24] COND TRUE i<5 [L25] i++ VAL [i=3] [L29] CALL check_error(i!=3) VAL [\old(b)=0] [L18] COND FALSE !((b) ? (0) : __blast_assert ()) VAL [\old(b)=0, b=0] [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 117 SDs, 0 SdLazy, 67 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2301 SizeOfPredicates, 2 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...