./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c --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_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/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 efd11941ceab8dc56d9aa56f1950f714738654ba ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 15:23:00,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:23:00,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:23:00,603 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:23:00,603 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:23:00,604 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:23:00,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:23:00,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:23:00,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:23:00,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:23:00,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:23:00,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:23:00,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:23:00,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:23:00,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:23:00,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:23:00,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:23:00,612 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:23:00,613 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:23:00,614 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:23:00,614 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:23:00,615 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:23:00,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:23:00,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:23:00,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:23:00,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:23:00,618 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:23:00,618 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:23:00,619 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:23:00,620 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:23:00,620 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:23:00,620 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:23:00,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:23:00,621 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:23:00,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:23:00,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:23:00,622 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 15:23:00,631 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:23:00,632 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:23:00,632 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:23:00,632 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 15:23:00,632 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 15:23:00,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 15:23:00,633 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 15:23:00,634 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:23:00,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:23:00,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:23:00,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:23:00,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:23:00,636 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 15:23:00,636 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_fd660a41-6e31-4c8a-9afc-bcb389cb1637/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 -> efd11941ceab8dc56d9aa56f1950f714738654ba [2018-11-18 15:23:00,659 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:23:00,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:23:00,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:23:00,669 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:23:00,669 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:23:00,670 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-18 15:23:00,709 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/data/66b4f1576/de72d4bbeb23466e8ca448d67ada7f3e/FLAG8ee3f5631 [2018-11-18 15:23:01,108 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:23:01,108 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/sv-benchmarks/c/ldv-regression/test22_true-unreach-call.c [2018-11-18 15:23:01,113 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/data/66b4f1576/de72d4bbeb23466e8ca448d67ada7f3e/FLAG8ee3f5631 [2018-11-18 15:23:01,124 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/data/66b4f1576/de72d4bbeb23466e8ca448d67ada7f3e [2018-11-18 15:23:01,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:23:01,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:23:01,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:23:01,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:23:01,129 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:23:01,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c31600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01, skipping insertion in model container [2018-11-18 15:23:01,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:23:01,151 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:23:01,264 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:23:01,271 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:23:01,284 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:23:01,297 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:23:01,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01 WrapperNode [2018-11-18 15:23:01,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:23:01,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:23:01,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:23:01,299 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:23:01,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:23:01,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:23:01,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:23:01,321 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:23:01,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... [2018-11-18 15:23:01,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:23:01,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:23:01,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:23:01,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:23:01,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/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 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure init [2018-11-18 15:23:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2018-11-18 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:23:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-18 15:23:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-18 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 15:23:01,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:23:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:23:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:23:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2018-11-18 15:23:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2018-11-18 15:23:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:23:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:23:01,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 15:23:01,599 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:23:01,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:01 BoogieIcfgContainer [2018-11-18 15:23:01,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:23:01,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:23:01,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:23:01,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:23:01,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:23:01" (1/3) ... [2018-11-18 15:23:01,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567f9a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:01, skipping insertion in model container [2018-11-18 15:23:01,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:01" (2/3) ... [2018-11-18 15:23:01,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567f9a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:01, skipping insertion in model container [2018-11-18 15:23:01,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:01" (3/3) ... [2018-11-18 15:23:01,607 INFO L112 eAbstractionObserver]: Analyzing ICFG test22_true-unreach-call.c [2018-11-18 15:23:01,613 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:23:01,617 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 15:23:01,630 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 15:23:01,655 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:23:01,655 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:23:01,655 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:23:01,655 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:23:01,655 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:23:01,656 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:23:01,656 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:23:01,656 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:23:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-11-18 15:23:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 15:23:01,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:23:01,670 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:23:01,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:23:01,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1385603301, now seen corresponding path program 1 times [2018-11-18 15:23:01,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:23:01,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:01,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:01,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:01,704 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:23:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:23:01,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:23:01,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:23:01,805 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:23:01,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:23:01,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:23:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:23:01,817 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-11-18 15:23:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:23:01,830 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-11-18 15:23:01,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:23:01,831 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2018-11-18 15:23:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:23:01,836 INFO L225 Difference]: With dead ends: 50 [2018-11-18 15:23:01,836 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 15:23:01,839 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:23:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 15:23:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 15:23:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 15:23:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-18 15:23:01,866 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 37 [2018-11-18 15:23:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:23:01,867 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-18 15:23:01,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:23:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-18 15:23:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 15:23:01,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:23:01,869 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:23:01,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:23:01,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1835423137, now seen corresponding path program 1 times [2018-11-18 15:23:01,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:23:01,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:01,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:01,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:01,871 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:23:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:23:02,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:02,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 15:23:02,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-11-18 15:23:02,090 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [10], [11], [17], [19], [21], [24], [30], [34], [36], [39], [46], [49], [56], [59], [60], [61], [62], [63], [65], [66], [67], [68], [69], [70], [71], [72], [73], [74] [2018-11-18 15:23:02,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 15:23:02,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 15:23:02,268 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 15:23:02,269 INFO L272 AbstractInterpreter]: Visited 33 different actions 39 times. Never merged. Never widened. Performed 304 root evaluator evaluations with a maximum evaluation depth of 5. Performed 304 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 39 variables. [2018-11-18 15:23:02,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:02,275 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 15:23:02,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:02,275 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:23:02,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:02,283 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 15:23:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:02,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:23:02,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 15:23:02,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 15:23:02,444 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,449 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,488 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 15:23:02,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 15:23:02,490 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,493 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,500 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,500 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-18 15:23:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:23:02,504 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 15:23:02,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2018-11-18 15:23:02,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-11-18 15:23:02,565 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,569 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:02,569 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:02,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-18 15:23:02,570 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:02,575 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:02,578 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:02,578 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:13, output treesize:7 [2018-11-18 15:23:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:23:02,634 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 15:23:02,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10] total 16 [2018-11-18 15:23:02,634 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:23:02,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:23:02,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:23:02,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:23:02,635 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2018-11-18 15:23:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:23:02,718 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-18 15:23:02,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:23:02,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-18 15:23:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:23:02,719 INFO L225 Difference]: With dead ends: 44 [2018-11-18 15:23:02,719 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 15:23:02,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2018-11-18 15:23:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 15:23:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-11-18 15:23:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 15:23:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-11-18 15:23:02,726 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 39 [2018-11-18 15:23:02,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:23:02,726 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-18 15:23:02,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:23:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-11-18 15:23:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 15:23:02,727 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:23:02,727 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:23:02,728 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:23:02,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:02,728 INFO L82 PathProgramCache]: Analyzing trace with hash -189929978, now seen corresponding path program 1 times [2018-11-18 15:23:02,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:23:02,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:02,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:02,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:02,729 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:23:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:23:02,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:02,948 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 15:23:02,949 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-11-18 15:23:02,949 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [6], [10], [11], [17], [19], [21], [24], [30], [34], [36], [39], [41], [46], [49], [56], [59], [60], [61], [62], [63], [65], [66], [67], [68], [69], [70], [71], [72], [73], [74] [2018-11-18 15:23:02,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 15:23:02,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 15:23:03,013 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 15:23:03,014 INFO L272 AbstractInterpreter]: Visited 34 different actions 40 times. Never merged. Never widened. Performed 308 root evaluator evaluations with a maximum evaluation depth of 5. Performed 308 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 40 variables. [2018-11-18 15:23:03,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:03,029 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 15:23:03,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:03,029 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:23:03,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:03,042 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 15:23:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:03,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:23:03,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 15:23:03,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 15:23:03,172 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,179 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-18 15:23:03,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 15:23:03,192 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,199 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,209 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:43, output treesize:5 [2018-11-18 15:23:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:23:03,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 15:23:03,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2018-11-18 15:23:03,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-11-18 15:23:03,254 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,259 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:03,260 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:03,261 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-18 15:23:03,261 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:03,264 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:03,266 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:03,273 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:13, output treesize:7 [2018-11-18 15:23:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 15:23:03,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 15:23:03,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 20 [2018-11-18 15:23:03,313 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 15:23:03,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 15:23:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 15:23:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2018-11-18 15:23:03,314 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 16 states. [2018-11-18 15:23:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:23:03,702 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2018-11-18 15:23:03,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 15:23:03,703 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-11-18 15:23:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:23:03,705 INFO L225 Difference]: With dead ends: 77 [2018-11-18 15:23:03,705 INFO L226 Difference]: Without dead ends: 69 [2018-11-18 15:23:03,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 15:23:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-18 15:23:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 38. [2018-11-18 15:23:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 15:23:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 15:23:03,713 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 42 [2018-11-18 15:23:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:23:03,713 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 15:23:03,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 15:23:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 15:23:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 15:23:03,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:23:03,714 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:23:03,716 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:23:03,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:23:03,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1784004735, now seen corresponding path program 2 times [2018-11-18 15:23:03,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:23:03,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:03,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:23:03,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:23:03,718 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:23:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:23:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:23:03,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:03,874 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 15:23:03,874 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 15:23:03,875 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 15:23:03,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:23:03,875 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:23:03,884 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:23:03,884 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 15:23:03,910 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 15:23:03,911 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:23:03,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:23:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 15:23:04,086 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 15:23:04,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 18 [2018-11-18 15:23:04,243 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-11-18 15:23:04,244 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:04,249 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:04,256 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 15:23:04,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2018-11-18 15:23:04,257 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 15:23:04,264 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:04,269 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 15:23:04,269 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:27, output treesize:7 [2018-11-18 15:23:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 15:23:04,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 15:23:04,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 30 [2018-11-18 15:23:04,342 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 15:23:04,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 15:23:04,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 15:23:04,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2018-11-18 15:23:04,343 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 22 states. [2018-11-18 15:23:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:23:05,262 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2018-11-18 15:23:05,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 15:23:05,262 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2018-11-18 15:23:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:23:05,262 INFO L225 Difference]: With dead ends: 79 [2018-11-18 15:23:05,262 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:23:05,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=493, Invalid=2477, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 15:23:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:23:05,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:23:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:23:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:23:05,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-11-18 15:23:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:23:05,264 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:23:05,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 15:23:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:23:05,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:23:05,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:23:05,369 INFO L425 ceAbstractionStarter]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-18 15:23:05,369 INFO L428 ceAbstractionStarter]: At program point initENTRY(lines 11 18) the Hoare annotation is: true [2018-11-18 15:23:05,369 INFO L425 ceAbstractionStarter]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-18 15:23:05,369 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:23:05,369 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:23:05,369 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:23:05,369 INFO L425 ceAbstractionStarter]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2018-11-18 15:23:05,369 INFO L428 ceAbstractionStarter]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:23:05,370 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L428 ceAbstractionStarter]: At program point L33-1(line 33) the Hoare annotation is: true [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2018-11-18 15:23:05,370 INFO L425 ceAbstractionStarter]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L428 ceAbstractionStarter]: At program point L33-3(line 33) the Hoare annotation is: true [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point L33-4(line 33) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L421 ceAbstractionStarter]: At program point L42(lines 31 50) the Hoare annotation is: false [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-18 15:23:05,371 INFO L421 ceAbstractionStarter]: At program point L38-4(lines 38 40) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pa~0.offset) (= main_~pd2~0.offset main_~pd1~0.offset) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0)))) [2018-11-18 15:23:05,371 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2018-11-18 15:23:05,372 INFO L421 ceAbstractionStarter]: At program point L38-5(lines 38 40) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset))) (and (= main_~pd2~0.offset main_~pa~0.offset) (= main_~pd2~0.offset main_~pd1~0.offset) (<= main_~i~0 .cse0) (<= .cse0 main_~i~0) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.base main_~pd1~0.base) (or (not (= 0 main_~pd1~0.base)) (not (= main_~pd1~0.offset 0))))) [2018-11-18 15:23:05,372 INFO L428 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: true [2018-11-18 15:23:05,372 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 30 50) the Hoare annotation is: true [2018-11-18 15:23:05,372 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-18 15:23:05,372 INFO L425 ceAbstractionStarter]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2018-11-18 15:23:05,372 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-18 15:23:05,372 INFO L428 ceAbstractionStarter]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2018-11-18 15:23:05,372 INFO L425 ceAbstractionStarter]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2018-11-18 15:23:05,372 INFO L425 ceAbstractionStarter]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2018-11-18 15:23:05,376 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 15:23:05,380 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 15:23:05,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:23:05 BoogieIcfgContainer [2018-11-18 15:23:05,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:23:05,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:23:05,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:23:05,382 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:23:05,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:01" (3/4) ... [2018-11-18 15:23:05,384 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:23:05,388 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure init [2018-11-18 15:23:05,388 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:23:05,388 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2018-11-18 15:23:05,389 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:23:05,389 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-18 15:23:05,392 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2018-11-18 15:23:05,393 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 15:23:05,393 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 15:23:05,393 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:23:05,425 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fd660a41-6e31-4c8a-9afc-bcb389cb1637/bin-2019/utaipan/witness.graphml [2018-11-18 15:23:05,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:23:05,426 INFO L168 Benchmark]: Toolchain (without parser) took 4300.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 959.2 MB in the beginning and 876.3 MB in the end (delta: 82.9 MB). Peak memory consumption was 267.0 MB. Max. memory is 11.5 GB. [2018-11-18 15:23:05,427 INFO L168 Benchmark]: CDTParser took 0.14 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 15:23:05,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.13 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 15:23:05,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.93 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 15:23:05,428 INFO L168 Benchmark]: Boogie Preprocessor took 70.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:23:05,428 INFO L168 Benchmark]: RCFGBuilder took 208.35 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:23:05,429 INFO L168 Benchmark]: TraceAbstraction took 3780.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 881.1 MB in the end (delta: 240.8 MB). Peak memory consumption was 283.2 MB. Max. memory is 11.5 GB. [2018-11-18 15:23:05,429 INFO L168 Benchmark]: Witness Printer took 43.90 ms. Allocated memory is still 1.2 GB. Free memory was 881.1 MB in the beginning and 876.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:23:05,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 171.13 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 21.93 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. * Boogie Preprocessor took 70.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.35 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3780.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 881.1 MB in the end (delta: 240.8 MB). Peak memory consumption was 283.2 MB. Max. memory is 11.5 GB. * Witness Printer took 43.90 ms. Allocated memory is still 1.2 GB. Free memory was 881.1 MB in the beginning and 876.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 38]: Loop Invariant [2018-11-18 15:23:05,433 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 15:23:05,434 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((pd2 == pa && pd2 == pd1) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pa) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 126 SDtfs, 119 SDslu, 749 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 229 SyntacticMatches, 9 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 23 PreInvPairs, 35 NumberOfFragments, 76 HoareAnnotationTreeSize, 23 FomulaSimplifications, 468 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 373 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 289 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 65949 SizeOfPredicates, 41 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 111/156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...