./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/eq2_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/eq2_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/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 fdb1f2e16ca0cea0aeedbb6ec0b2cb707dfee0e0 ............................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 10:18:03,805 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 10:18:03,806 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 10:18:03,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 10:18:03,814 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 10:18:03,814 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 10:18:03,815 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 10:18:03,816 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 10:18:03,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 10:18:03,818 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 10:18:03,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 10:18:03,818 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 10:18:03,819 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 10:18:03,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 10:18:03,820 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 10:18:03,821 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 10:18:03,821 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 10:18:03,823 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 10:18:03,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 10:18:03,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 10:18:03,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 10:18:03,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 10:18:03,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 10:18:03,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 10:18:03,829 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 10:18:03,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 10:18:03,830 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 10:18:03,831 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 10:18:03,831 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 10:18:03,832 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 10:18:03,832 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 10:18:03,833 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 10:18:03,833 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 10:18:03,833 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 10:18:03,834 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 10:18:03,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 10:18:03,834 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 10:18:03,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 10:18:03,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 10:18:03,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 10:18:03,846 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 10:18:03,846 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 10:18:03,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 10:18:03,847 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 10:18:03,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 10:18:03,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 10:18:03,849 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 10:18:03,849 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 10:18:03,849 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_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/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 -> fdb1f2e16ca0cea0aeedbb6ec0b2cb707dfee0e0 [2018-12-09 10:18:03,872 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 10:18:03,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 10:18:03,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 10:18:03,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 10:18:03,885 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 10:18:03,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/../../sv-benchmarks/c/loop-invariants/eq2_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-09 10:18:03,930 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/data/c24603881/5e784748dccb4391be3f85738123b23b/FLAG3928d568c [2018-12-09 10:18:04,339 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 10:18:04,339 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/sv-benchmarks/c/loop-invariants/eq2_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-09 10:18:04,342 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/data/c24603881/5e784748dccb4391be3f85738123b23b/FLAG3928d568c [2018-12-09 10:18:04,351 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/data/c24603881/5e784748dccb4391be3f85738123b23b [2018-12-09 10:18:04,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 10:18:04,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 10:18:04,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 10:18:04,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 10:18:04,358 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 10:18:04,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643eada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04, skipping insertion in model container [2018-12-09 10:18:04,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 10:18:04,378 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 10:18:04,471 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:18:04,473 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 10:18:04,485 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 10:18:04,494 INFO L195 MainTranslator]: Completed translation [2018-12-09 10:18:04,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04 WrapperNode [2018-12-09 10:18:04,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 10:18:04,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 10:18:04,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 10:18:04,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 10:18:04,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 10:18:04,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 10:18:04,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 10:18:04,507 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 10:18:04,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... [2018-12-09 10:18:04,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 10:18:04,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 10:18:04,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 10:18:04,547 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 10:18:04,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/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 10:18:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 10:18:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 10:18:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 10:18:04,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 10:18:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 10:18:04,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 10:18:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 10:18:04,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 10:18:04,662 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 10:18:04,663 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 10:18:04,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:18:04 BoogieIcfgContainer [2018-12-09 10:18:04,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 10:18:04,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 10:18:04,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 10:18:04,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 10:18:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:18:04" (1/3) ... [2018-12-09 10:18:04,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442c33b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:18:04, skipping insertion in model container [2018-12-09 10:18:04,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:18:04" (2/3) ... [2018-12-09 10:18:04,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442c33b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:18:04, skipping insertion in model container [2018-12-09 10:18:04,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:18:04" (3/3) ... [2018-12-09 10:18:04,667 INFO L112 eAbstractionObserver]: Analyzing ICFG eq2_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-12-09 10:18:04,672 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 10:18:04,676 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 10:18:04,684 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 10:18:04,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 10:18:04,702 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 10:18:04,702 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 10:18:04,702 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 10:18:04,702 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 10:18:04,702 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 10:18:04,702 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 10:18:04,702 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 10:18:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 10:18:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 10:18:04,714 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 10:18:04,715 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 10:18:04,716 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 10:18:04,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 10:18:04,719 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 10:18:04,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 10:18:04,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:18:04,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 10:18:04,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 10:18:04,747 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 10:18:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 10:18:04,883 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 10:18:04,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 10:18:04,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 10:18:04,885 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 10:18:04,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 10:18:04,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 10:18:04,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 10:18:04,896 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2018-12-09 10:18:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 10:18:04,925 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-12-09 10:18:04,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 10:18:04,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-09 10:18:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 10:18:04,931 INFO L225 Difference]: With dead ends: 28 [2018-12-09 10:18:04,932 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 10:18:04,933 INFO L631 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 [2018-12-09 10:18:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 10:18:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 10:18:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 10:18:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 10:18:04,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-09 10:18:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 10:18:04,948 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 10:18:04,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 10:18:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 10:18:04,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 10:18:04,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 10:18:04,981 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 10:18:04,982 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2018-12-09 10:18:04,982 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (<= main_~z~0 main_~y~0) (<= main_~y~0 main_~z~0)) [2018-12-09 10:18:04,982 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= main_~z~0 main_~y~0) (<= main_~y~0 main_~z~0)) [2018-12-09 10:18:04,983 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-09 10:18:04,983 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-09 10:18:04,983 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-09 10:18:04,983 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-09 10:18:04,983 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-09 10:18:04,983 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-09 10:18:04,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:18:04 BoogieIcfgContainer [2018-12-09 10:18:04,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 10:18:04,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 10:18:04,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 10:18:04,990 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 10:18:04,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:18:04" (3/4) ... [2018-12-09 10:18:04,993 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 10:18:04,996 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 10:18:04,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 10:18:04,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 10:18:04,999 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 10:18:04,999 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 10:18:04,999 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 10:18:05,024 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_58454fcf-21e9-48cc-9d0d-87224bbd8c5b/bin-2019/utaipan/witness.graphml [2018-12-09 10:18:05,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 10:18:05,024 INFO L168 Benchmark]: Toolchain (without parser) took 671.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -99.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,025 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:18:05,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.19 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 10:18:05,026 INFO L168 Benchmark]: Boogie Preprocessor took 40.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,026 INFO L168 Benchmark]: RCFGBuilder took 115.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,027 INFO L168 Benchmark]: TraceAbstraction took 326.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,027 INFO L168 Benchmark]: Witness Printer took 33.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 10:18:05,029 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.19 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 938.9 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 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 938.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 938.9 MB in the beginning and 1.1 GB in the end (delta: -166.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 115.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 326.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.7 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * Witness Printer took 33.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: z <= y && y <= z - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 7 SDslu, 29 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 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 correct! Received shutdown request...