./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test18.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test18.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/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 3bdf2cb07df28eeba3e91ce6104175f18bd37d0c ............................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:52,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:52,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:52,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:52,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:52,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:52,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:52,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:52,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:52,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:52,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:52,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:52,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:52,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:52,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:52,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:52,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:52,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:52,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:52,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:52,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:52,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:52,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:52,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:52,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:52,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:52,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:52,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:52,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:52,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:52,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:52,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:52,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:52,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:52,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:52,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:52,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:52,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:52,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:52,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:52,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:52,685 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:52,700 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:52,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:52,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:52,701 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:52,701 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:52,701 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:52,701 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:52,702 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:52,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:52,702 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:52,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:52,702 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:52,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:52,703 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:52,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:52,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:52,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:52,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:52,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:52,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:52,705 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:52,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:52,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:52,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:52,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:52,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:52,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:52,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:52,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:52,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:52,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:52,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:52,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:52,707 INFO L138 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_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/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 -> 3bdf2cb07df28eeba3e91ce6104175f18bd37d0c [2019-10-22 11:21:52,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:52,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:52,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:52,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:52,747 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:52,747 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test18.c [2019-10-22 11:21:52,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/data/65e9e336c/9f85a0f48cc54103bb2417de094fb4c5/FLAG170b12815 [2019-10-22 11:21:53,180 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:53,181 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/sv-benchmarks/c/ldv-regression/test18.c [2019-10-22 11:21:53,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/data/65e9e336c/9f85a0f48cc54103bb2417de094fb4c5/FLAG170b12815 [2019-10-22 11:21:53,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/data/65e9e336c/9f85a0f48cc54103bb2417de094fb4c5 [2019-10-22 11:21:53,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:53,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:53,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:53,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:53,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:53,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f4274c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53, skipping insertion in model container [2019-10-22 11:21:53,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,618 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:53,631 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:53,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:53,830 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:53,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:53,911 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:53,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53 WrapperNode [2019-10-22 11:21:53,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:53,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:53,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:53,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:53,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:53,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:53,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:53,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:53,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... [2019-10-22 11:21:53,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:53,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:53,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:53,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:53,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/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 [2019-10-22 11:21:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:21:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 11:21:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:21:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 11:21:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:54,236 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:54,236 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-22 11:21:54,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:54 BoogieIcfgContainer [2019-10-22 11:21:54,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:54,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:54,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:54,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:54,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:53" (1/3) ... [2019-10-22 11:21:54,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf42ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:54, skipping insertion in model container [2019-10-22 11:21:54,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:53" (2/3) ... [2019-10-22 11:21:54,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf42ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:54, skipping insertion in model container [2019-10-22 11:21:54,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:54" (3/3) ... [2019-10-22 11:21:54,245 INFO L109 eAbstractionObserver]: Analyzing ICFG test18.c [2019-10-22 11:21:54,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:54,258 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:54,265 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:54,284 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:54,285 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:54,285 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:54,285 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:54,285 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:54,285 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:54,285 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:54,286 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-10-22 11:21:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:54,302 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:54,303 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:54,304 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash 889475945, now seen corresponding path program 1 times [2019-10-22 11:21:54,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:54,316 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103560207] [2019-10-22 11:21:54,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:54,513 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103560207] [2019-10-22 11:21:54,514 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:54,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:54,515 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403286997] [2019-10-22 11:21:54,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:54,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:54,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:54,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:54,556 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2019-10-22 11:21:54,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:54,707 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2019-10-22 11:21:54,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:54,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 11:21:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:54,715 INFO L225 Difference]: With dead ends: 13 [2019-10-22 11:21:54,716 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:21:54,718 INFO L600 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 [2019-10-22 11:21:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:21:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:21:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:21:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:21:54,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-10-22 11:21:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:54,742 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:21:54,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:21:54,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:21:54,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:21:54,760 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:21:54,760 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:21:54,760 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:21:54,760 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:21:54,761 INFO L446 ceAbstractionStarter]: At program point L23(lines 13 24) the Hoare annotation is: true [2019-10-22 11:21:54,761 INFO L439 ceAbstractionStarter]: At program point L17(lines 13 24) the Hoare annotation is: false [2019-10-22 11:21:54,761 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-10-22 11:21:54,761 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2019-10-22 11:21:54,761 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 11) no Hoare annotation was computed. [2019-10-22 11:21:54,761 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:21:54,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:54 BoogieIcfgContainer [2019-10-22 11:21:54,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:54,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:54,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:54,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:54,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:54" (3/4) ... [2019-10-22 11:21:54,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:21:54,787 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 11:21:54,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:21:54,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:21:54,822 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2e73d236-4f83-409d-af23-de2d3d2bb4a9/bin/utaipan/witness.graphml [2019-10-22 11:21:54,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:54,825 INFO L168 Benchmark]: Toolchain (without parser) took 1225.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -141.1 MB). Peak memory consumption was 443.2 kB. Max. memory is 11.5 GB. [2019-10-22 11:21:54,825 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:54,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:54,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:54,827 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:54,827 INFO L168 Benchmark]: RCFGBuilder took 270.56 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:54,828 INFO L168 Benchmark]: TraceAbstraction took 532.04 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:54,828 INFO L168 Benchmark]: Witness Printer took 52.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:54,830 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -194.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 270.56 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 532.04 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 52.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 9 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...