./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/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 6ee0c0bb9185005ad94b7785b09df595a41ce360 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:35:38,519 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:35:38,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:35:38,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:35:38,526 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:35:38,527 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:35:38,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:35:38,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:35:38,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:35:38,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:35:38,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:35:38,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:35:38,530 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:35:38,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:35:38,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:35:38,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:35:38,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:35:38,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:35:38,533 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:35:38,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:35:38,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:35:38,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:35:38,536 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:35:38,536 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:35:38,536 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:35:38,537 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:35:38,537 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:35:38,538 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:35:38,538 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:35:38,539 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:35:38,539 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:35:38,539 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:35:38,539 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:35:38,539 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:35:38,540 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:35:38,540 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:35:38,540 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:35:38,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:35:38,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:35:38,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:35:38,548 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:35:38,548 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:35:38,549 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:35:38,549 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:35:38,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:35:38,550 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:35:38,550 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:35:38,551 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:35:38,551 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:35:38,551 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:35:38,551 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:35:38,551 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_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/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 -> 6ee0c0bb9185005ad94b7785b09df595a41ce360 [2018-12-09 19:35:38,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:35:38,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:35:38,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:35:38,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:35:38,582 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:35:38,582 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-12-09 19:35:38,623 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/data/6a7ebcf02/5a7a8af3385d4db588560a4b885d9cb4/FLAGc890b5bd9 [2018-12-09 19:35:39,006 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:35:39,006 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-12-09 19:35:39,010 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/data/6a7ebcf02/5a7a8af3385d4db588560a4b885d9cb4/FLAGc890b5bd9 [2018-12-09 19:35:39,018 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/data/6a7ebcf02/5a7a8af3385d4db588560a4b885d9cb4 [2018-12-09 19:35:39,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:35:39,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:35:39,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:35:39,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:35:39,023 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:35:39,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f385d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39, skipping insertion in model container [2018-12-09 19:35:39,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:35:39,038 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:35:39,118 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:35:39,121 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:35:39,128 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:35:39,136 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:35:39,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39 WrapperNode [2018-12-09 19:35:39,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:35:39,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:35:39,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:35:39,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:35:39,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:35:39,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:35:39,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:35:39,148 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:35:39,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2018-12-09 19:35:39,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:35:39,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:35:39,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:35:39,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:35:39,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:35:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:35:39,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:35:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:35:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:35:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:35:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:35:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:35:39,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:35:39,290 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:35:39,290 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 19:35:39,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:39 BoogieIcfgContainer [2018-12-09 19:35:39,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:35:39,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:35:39,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:35:39,292 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:35:39,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:35:39" (1/3) ... [2018-12-09 19:35:39,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e361bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:39, skipping insertion in model container [2018-12-09 19:35:39,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (2/3) ... [2018-12-09 19:35:39,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e361bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:39, skipping insertion in model container [2018-12-09 19:35:39,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:39" (3/3) ... [2018-12-09 19:35:39,294 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-12-09 19:35:39,299 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:35:39,303 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:35:39,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:35:39,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:35:39,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:35:39,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:35:39,329 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:35:39,329 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:35:39,329 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:35:39,330 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:35:39,330 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:35:39,339 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-09 19:35:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 19:35:39,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:39,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:39,344 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:39,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,347 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2018-12-09 19:35:39,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:39,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:39,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,376 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:35:39,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:35:39,426 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:35:39,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:35:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:35:39,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:35:39,437 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-12-09 19:35:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:39,456 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-12-09 19:35:39,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:35:39,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-09 19:35:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:39,461 INFO L225 Difference]: With dead ends: 31 [2018-12-09 19:35:39,461 INFO L226 Difference]: Without dead ends: 12 [2018-12-09 19:35:39,463 INFO L631 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 [2018-12-09 19:35:39,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-09 19:35:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-09 19:35:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-09 19:35:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-09 19:35:39,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-09 19:35:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:39,484 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-09 19:35:39,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:35:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-09 19:35:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 19:35:39,484 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:39,484 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:39,484 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:39,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash -429188558, now seen corresponding path program 1 times [2018-12-09 19:35:39,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:39,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:39,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,485 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,511 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:35:39,512 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-09 19:35:39,513 INFO L205 CegarAbsIntRunner]: [0], [4], [11], [13], [20], [23], [25], [31], [32], [33], [35] [2018-12-09 19:35:39,531 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:35:39,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:35:39,611 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 19:35:39,612 INFO L272 AbstractInterpreter]: Visited 11 different actions 21 times. Merged at 2 different actions 4 times. Never widened. Performed 62 root evaluator evaluations with a maximum evaluation depth of 4. Performed 62 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-12-09 19:35:39,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,617 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 19:35:39,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,617 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/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 [2018-12-09 19:35:39,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:39,624 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:35:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:39,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:35:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:35:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:35:39,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2018-12-09 19:35:39,693 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 19:35:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:35:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:35:39,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:35:39,694 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2018-12-09 19:35:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:39,703 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-09 19:35:39,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:35:39,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-09 19:35:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:39,704 INFO L225 Difference]: With dead ends: 18 [2018-12-09 19:35:39,704 INFO L226 Difference]: Without dead ends: 13 [2018-12-09 19:35:39,704 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:35:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-09 19:35:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-09 19:35:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-09 19:35:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-09 19:35:39,706 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-09 19:35:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:39,706 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-09 19:35:39,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:35:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-09 19:35:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 19:35:39,707 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:39,707 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:39,707 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:39,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,707 INFO L82 PathProgramCache]: Analyzing trace with hash -384405667, now seen corresponding path program 2 times [2018-12-09 19:35:39,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:39,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:39,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,708 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,738 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:35:39,738 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 19:35:39,738 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 19:35:39,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,738 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/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 [2018-12-09 19:35:39,745 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 19:35:39,745 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 19:35:39,754 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-09 19:35:39,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:35:39,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:35:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:35:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:35:39,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-09 19:35:39,819 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 19:35:39,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:35:39,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:35:39,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:35:39,820 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-12-09 19:35:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:39,828 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-09 19:35:39,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 19:35:39,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-12-09 19:35:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:39,828 INFO L225 Difference]: With dead ends: 19 [2018-12-09 19:35:39,828 INFO L226 Difference]: Without dead ends: 14 [2018-12-09 19:35:39,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:35:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-09 19:35:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-09 19:35:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-09 19:35:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-09 19:35:39,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-09 19:35:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:39,831 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-09 19:35:39,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:35:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-09 19:35:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 19:35:39,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:39,831 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:39,831 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:39,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1003863954, now seen corresponding path program 3 times [2018-12-09 19:35:39,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:39,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:35:39,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,860 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:35:39,860 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 19:35:39,860 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 19:35:39,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:39,860 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/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 [2018-12-09 19:35:39,866 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 19:35:39,866 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 19:35:39,872 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 19:35:39,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:35:39,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:35:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:35:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:39,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:35:39,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-12-09 19:35:39,940 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 19:35:39,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 19:35:39,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 19:35:39,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-09 19:35:39,940 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-12-09 19:35:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:39,956 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-09 19:35:39,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:35:39,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-12-09 19:35:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:39,957 INFO L225 Difference]: With dead ends: 20 [2018-12-09 19:35:39,957 INFO L226 Difference]: Without dead ends: 15 [2018-12-09 19:35:39,957 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-12-09 19:35:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-09 19:35:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 19:35:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 19:35:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-09 19:35:39,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-09 19:35:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:39,959 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-09 19:35:39,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 19:35:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-09 19:35:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 19:35:39,960 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:39,960 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:39,960 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:39,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1090549245, now seen corresponding path program 4 times [2018-12-09 19:35:39,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:39,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:35:39,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:39,961 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:40,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:40,028 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:35:40,028 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 19:35:40,028 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 19:35:40,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:35:40,029 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:35:40,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:40,037 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:35:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:40,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:35:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:40,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:35:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:40,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 19:35:40,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2018-12-09 19:35:40,117 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 19:35:40,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 19:35:40,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 19:35:40,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-12-09 19:35:40,117 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2018-12-09 19:35:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:40,152 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-09 19:35:40,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 19:35:40,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-12-09 19:35:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:40,152 INFO L225 Difference]: With dead ends: 21 [2018-12-09 19:35:40,152 INFO L226 Difference]: Without dead ends: 16 [2018-12-09 19:35:40,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-12-09 19:35:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-09 19:35:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-09 19:35:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-09 19:35:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-09 19:35:40,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-12-09 19:35:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:40,155 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-09 19:35:40,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 19:35:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-09 19:35:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 19:35:40,156 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:35:40,156 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:35:40,156 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:35:40,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:35:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash -517174030, now seen corresponding path program 5 times [2018-12-09 19:35:40,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:35:40,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:40,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:35:40,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:35:40,157 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:35:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:35:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:35:40,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:35:40,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:35:40,188 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:35:40,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 19:35:40,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 19:35:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:35:40,189 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2018-12-09 19:35:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:35:40,196 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-12-09 19:35:40,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:35:40,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-12-09 19:35:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:35:40,196 INFO L225 Difference]: With dead ends: 16 [2018-12-09 19:35:40,197 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:35:40,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:35:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:35:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:35:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:35:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:35:40,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-12-09 19:35:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:35:40,198 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:35:40,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 19:35:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:35:40,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:35:40,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 19:35:40,269 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 19:35:40,269 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-12-09 19:35:40,269 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 (+ main_~i~0 3)) (<= main_~i~0 5)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 7)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2018-12-09 19:35:40,269 INFO L444 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2018-12-09 19:35:40,270 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-09 19:35:40,270 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-09 19:35:40,270 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-09 19:35:40,270 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-09 19:35:40,270 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-09 19:35:40,270 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-09 19:35:40,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:35:40 BoogieIcfgContainer [2018-12-09 19:35:40,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:35:40,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:35:40,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:35:40,278 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:35:40,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:39" (3/4) ... [2018-12-09 19:35:40,280 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:35:40,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 19:35:40,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 19:35:40,284 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-09 19:35:40,286 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 19:35:40,286 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 19:35:40,286 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:35:40,308 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c06d61e4-b1f1-4d74-9a0d-1bb5bd48dc27/bin-2019/utaipan/witness.graphml [2018-12-09 19:35:40,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:35:40,309 INFO L168 Benchmark]: Toolchain (without parser) took 1288.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 950.8 MB in the beginning and 950.8 MB in the end (delta: -17.7 kB). Peak memory consumption was 138.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,309 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:35:40,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.52 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 939.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,310 INFO L168 Benchmark]: Boogie Preprocessor took 10.83 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:35:40,311 INFO L168 Benchmark]: RCFGBuilder took 131.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,311 INFO L168 Benchmark]: TraceAbstraction took 987.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.2 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,311 INFO L168 Benchmark]: Witness Printer took 30.33 ms. Allocated memory is still 1.2 GB. Free memory was 954.2 MB in the beginning and 950.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:35:40,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.52 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.0 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 11.24 ms. Allocated memory is still 1.0 GB. Free memory was 940.0 MB in the beginning and 939.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.83 ms. Allocated memory is still 1.0 GB. Free memory is still 939.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 131.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -183.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 987.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 954.2 MB in the end (delta: 168.4 MB). Peak memory consumption was 168.4 MB. Max. memory is 11.5 GB. * Witness Printer took 30.33 ms. Allocated memory is still 1.2 GB. Free memory was 954.2 MB in the beginning and 950.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((8 <= j && j <= i + 3) && i <= 5) || ((6 <= j && j + 3 <= i) && j <= 6)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((7 <= j && j <= i) && i <= 7)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 1 SDslu, 156 SDs, 0 SdLazy, 94 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 86 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 18 NumberOfFragments, 71 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 5077 SizeOfPredicates, 8 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 15/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...