./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/structure_assignment_true-termination.c_true-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_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/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 c2b2c558ebaf05bdc56eb3149a9975d865a1792e ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:55:49,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:55:49,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:55:49,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:55:49,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:55:49,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:55:49,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:55:49,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:55:49,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:55:49,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:55:49,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:55:49,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:55:49,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:55:49,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:55:49,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:55:49,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:55:49,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:55:49,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:55:49,587 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:55:49,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:55:49,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:55:49,589 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:55:49,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:55:49,591 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:55:49,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:55:49,592 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:55:49,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:55:49,593 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:55:49,594 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:55:49,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:55:49,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:55:49,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:55:49,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:55:49,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:55:49,596 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:55:49,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:55:49,597 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 10:55:49,607 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:55:49,607 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:55:49,608 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:55:49,608 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:55:49,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:55:49,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:55:49,609 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:55:49,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:55:49,609 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:55:49,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:55:49,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:55:49,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:55:49,611 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:55:49,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:55:49,611 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_b4498b49-3e60-4131-887b-e61a23ad40a9/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 -> c2b2c558ebaf05bdc56eb3149a9975d865a1792e [2018-11-18 10:55:49,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:55:49,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:55:49,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:55:49,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:55:49,643 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:55:49,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.i [2018-11-18 10:55:49,679 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/data/cd88a5f08/027fa3271b7d499881dccf5eb6e82d29/FLAG741c38b25 [2018-11-18 10:55:50,068 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:55:50,068 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/sv-benchmarks/c/ldv-regression/structure_assignment_true-termination.c_true-unreach-call.i [2018-11-18 10:55:50,072 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/data/cd88a5f08/027fa3271b7d499881dccf5eb6e82d29/FLAG741c38b25 [2018-11-18 10:55:50,087 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/data/cd88a5f08/027fa3271b7d499881dccf5eb6e82d29 [2018-11-18 10:55:50,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:55:50,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:55:50,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:55:50,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:55:50,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:55:50,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88e9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50, skipping insertion in model container [2018-11-18 10:55:50,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:55:50,111 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:55:50,209 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:55:50,211 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:55:50,221 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:55:50,233 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:55:50,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50 WrapperNode [2018-11-18 10:55:50,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:55:50,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:55:50,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:55:50,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:55:50,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:55:50,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:55:50,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:55:50,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:55:50,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... [2018-11-18 10:55:50,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:55:50,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:55:50,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:55:50,267 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:55:50,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/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 10:55:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 10:55:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:55:50,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:55:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 10:55:50,343 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-11-18 10:55:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-11-18 10:55:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:55:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:55:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 10:55:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:55:50,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:55:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 10:55:50,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 10:55:50,451 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:55:50,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:50 BoogieIcfgContainer [2018-11-18 10:55:50,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:55:50,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:55:50,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:55:50,454 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:55:50,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:55:50" (1/3) ... [2018-11-18 10:55:50,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc5a060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:55:50, skipping insertion in model container [2018-11-18 10:55:50,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:55:50" (2/3) ... [2018-11-18 10:55:50,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc5a060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:55:50, skipping insertion in model container [2018-11-18 10:55:50,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:50" (3/3) ... [2018-11-18 10:55:50,457 INFO L112 eAbstractionObserver]: Analyzing ICFG structure_assignment_true-termination.c_true-unreach-call.i [2018-11-18 10:55:50,465 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:55:50,471 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:55:50,484 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:55:50,510 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:55:50,511 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:55:50,511 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:55:50,511 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:55:50,511 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:55:50,511 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:55:50,511 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:55:50,511 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:55:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 10:55:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:55:50,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:55:50,531 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:55:50,533 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:55:50,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:55:50,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times [2018-11-18 10:55:50,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:55:50,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:55:50,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:55:50,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:55:50,580 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:55:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:55:50,664 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 10:55:50,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:55:50,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:55:50,666 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 10:55:50,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:55:50,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:55:50,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:55:50,678 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-18 10:55:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:55:50,692 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-11-18 10:55:50,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:55:50,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 10:55:50,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:55:50,699 INFO L225 Difference]: With dead ends: 22 [2018-11-18 10:55:50,699 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:55:50,701 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:55:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:55:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:55:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:55:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:55:50,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-18 10:55:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:55:50,722 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:55:50,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:55:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:55:50,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:55:50,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:55:50,748 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:55:50,748 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:55:50,748 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:55:50,748 INFO L425 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2018-11-18 10:55:50,749 INFO L425 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2018-11-18 10:55:50,749 INFO L428 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2018-11-18 10:55:50,749 INFO L425 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2018-11-18 10:55:50,749 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:55:50,749 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:55:50,749 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:55:50,749 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:55:50,749 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 19 26) the Hoare annotation is: true [2018-11-18 10:55:50,749 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 19 26) no Hoare annotation was computed. [2018-11-18 10:55:50,750 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 19 26) no Hoare annotation was computed. [2018-11-18 10:55:50,750 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 10:55:50,750 INFO L421 ceAbstractionStarter]: At program point L24-2(line 24) the Hoare annotation is: false [2018-11-18 10:55:50,750 INFO L425 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2018-11-18 10:55:50,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:55:50 BoogieIcfgContainer [2018-11-18 10:55:50,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:55:50,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:55:50,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:55:50,752 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:55:50,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:50" (3/4) ... [2018-11-18 10:55:50,755 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:55:50,759 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:55:50,759 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2018-11-18 10:55:50,760 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:55:50,762 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-18 10:55:50,762 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-18 10:55:50,762 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 10:55:50,762 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:55:50,788 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b4498b49-3e60-4131-887b-e61a23ad40a9/bin-2019/utaipan/witness.graphml [2018-11-18 10:55:50,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:55:50,789 INFO L168 Benchmark]: Toolchain (without parser) took 700.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -124.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,790 INFO L168 Benchmark]: CDTParser took 0.12 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 10:55:50,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.93 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,791 INFO L168 Benchmark]: Boogie Preprocessor took 16.77 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:55:50,791 INFO L168 Benchmark]: RCFGBuilder took 184.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,792 INFO L168 Benchmark]: TraceAbstraction took 300.17 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,792 INFO L168 Benchmark]: Witness Printer took 36.50 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:50,794 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.45 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.93 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.77 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 184.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 300.17 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: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.50 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: 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: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 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...