./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 c0477f4e5b27a6da26de88eabc674e3fb9f5fd06 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:51:57,556 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:51:57,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:51:57,565 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:51:57,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:51:57,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:51:57,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:51:57,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:51:57,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:51:57,570 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:51:57,571 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:51:57,571 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:51:57,572 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:51:57,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:51:57,573 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:51:57,574 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:51:57,574 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:51:57,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:51:57,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:51:57,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:51:57,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:51:57,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:51:57,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:51:57,583 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:51:57,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:51:57,584 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:51:57,585 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:51:57,585 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:51:57,586 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:51:57,586 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:51:57,586 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:51:57,587 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:51:57,587 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:51:57,587 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:51:57,588 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:51:57,588 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:51:57,588 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 02:51:57,596 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:51:57,596 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:51:57,597 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 02:51:57,597 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 02:51:57,597 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 02:51:57,597 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 02:51:57,597 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 02:51:57,597 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 02:51:57,597 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 02:51:57,598 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 02:51:57,598 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 02:51:57,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 02:51:57,598 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 02:51:57,599 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 02:51:57,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 02:51:57,600 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 02:51:57,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:51:57,600 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:51:57,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 02:51:57,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:51:57,600 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 02:51:57,601 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 02:51:57,601 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 02:51:57,602 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 02:51:57,602 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 02:51:57,602 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_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 -> c0477f4e5b27a6da26de88eabc674e3fb9f5fd06 [2018-11-23 02:51:57,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:51:57,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:51:57,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:51:57,641 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:51:57,641 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:51:57,642 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call.i.v+cfa-reducer.c [2018-11-23 02:51:57,690 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/data/e7dd93935/5b93fb510289411d9b0e8e3ca6b4ae35/FLAGaba1b320c [2018-11-23 02:51:58,026 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:51:58,026 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call.i.v+cfa-reducer.c [2018-11-23 02:51:58,030 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/data/e7dd93935/5b93fb510289411d9b0e8e3ca6b4ae35/FLAGaba1b320c [2018-11-23 02:51:58,449 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/data/e7dd93935/5b93fb510289411d9b0e8e3ca6b4ae35 [2018-11-23 02:51:58,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:51:58,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:51:58,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:51:58,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:51:58,456 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:51:58,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e42f8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58, skipping insertion in model container [2018-11-23 02:51:58,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:51:58,481 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:51:58,589 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:51:58,592 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:51:58,605 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:51:58,618 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:51:58,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58 WrapperNode [2018-11-23 02:51:58,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:51:58,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:51:58,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:51:58,620 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:51:58,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:51:58,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:51:58,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:51:58,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:51:58,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... [2018-11-23 02:51:58,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:51:58,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:51:58,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:51:58,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:51:58,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 [2018-11-23 02:51:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 02:51:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 02:51:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 02:51:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 02:51:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:51:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:51:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 02:51:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 02:51:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 02:51:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 02:51:58,889 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:51:58,889 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 02:51:58,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:58 BoogieIcfgContainer [2018-11-23 02:51:58,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:51:58,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 02:51:58,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 02:51:58,893 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 02:51:58,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:51:58" (1/3) ... [2018-11-23 02:51:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79768430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:58, skipping insertion in model container [2018-11-23 02:51:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:51:58" (2/3) ... [2018-11-23 02:51:58,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79768430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:51:58, skipping insertion in model container [2018-11-23 02:51:58,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:58" (3/3) ... [2018-11-23 02:51:58,896 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call.i.v+cfa-reducer.c [2018-11-23 02:51:58,905 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 02:51:58,910 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 02:51:58,926 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 02:51:58,956 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 02:51:58,956 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 02:51:58,956 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 02:51:58,956 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:51:58,957 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:51:58,957 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 02:51:58,957 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:51:58,957 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 02:51:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 02:51:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 02:51:58,979 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:51:58,979 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:51:58,981 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:51:58,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:51:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -920288751, now seen corresponding path program 1 times [2018-11-23 02:51:58,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:51:59,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:59,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:51:59,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:59,027 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:51:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:51:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:51:59,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:51:59,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 02:51:59,158 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 02:51:59,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 02:51:59,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:51:59,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:51:59,179 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-23 02:51:59,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:51:59,255 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-23 02:51:59,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:51:59,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-23 02:51:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:51:59,262 INFO L225 Difference]: With dead ends: 30 [2018-11-23 02:51:59,262 INFO L226 Difference]: Without dead ends: 15 [2018-11-23 02:51:59,264 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 02:51:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-23 02:51:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-23 02:51:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 02:51:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 02:51:59,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-23 02:51:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:51:59,288 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 02:51:59,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 02:51:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 02:51:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 02:51:59,289 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:51:59,289 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:51:59,289 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:51:59,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:51:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash 363684724, now seen corresponding path program 1 times [2018-11-23 02:51:59,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:51:59,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:59,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:51:59,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:51:59,291 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:51:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:51:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:51:59,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:51:59,556 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:51:59,557 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-23 02:51:59,558 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [11], [13], [16], [18], [21], [22], [28], [29], [30] [2018-11-23 02:51:59,585 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 02:51:59,586 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 02:51:59,778 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 02:51:59,779 INFO L272 AbstractInterpreter]: Visited 13 different actions 33 times. Merged at 5 different actions 20 times. Never widened. Performed 180 root evaluator evaluations with a maximum evaluation depth of 4. Performed 180 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-23 02:51:59,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:51:59,791 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 02:51:59,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:51:59,791 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 [2018-11-23 02:51:59,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:51:59,798 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 02:51:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:51:59,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:51:59,865 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-23 02:51:59,867 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:51:59,868 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:51:59,870 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:51:59,901 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:51:59,901 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-23 02:51:59,930 INFO L478 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 23 treesize of output 19 [2018-11-23 02:51:59,945 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2018-11-23 02:51:59,945 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 02:51:59,951 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:51:59,961 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-23 02:51:59,961 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-11-23 02:52:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:00,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:52:00,094 INFO L478 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 18 treesize of output 16 [2018-11-23 02:52:00,107 INFO L478 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 9 treesize of output 3 [2018-11-23 02:52:00,107 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,117 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:26, output treesize:9 [2018-11-23 02:52:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:00,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:52:00,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2018-11-23 02:52:00,148 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:52:00,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-23 02:52:00,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-23 02:52:00,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-23 02:52:00,149 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2018-11-23 02:52:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:52:00,269 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-23 02:52:00,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 02:52:00,270 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2018-11-23 02:52:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:52:00,275 INFO L225 Difference]: With dead ends: 20 [2018-11-23 02:52:00,275 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 02:52:00,276 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-11-23 02:52:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 02:52:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-23 02:52:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 02:52:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-23 02:52:00,280 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-23 02:52:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:52:00,281 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-23 02:52:00,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-23 02:52:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 02:52:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 02:52:00,281 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:52:00,282 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:52:00,282 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:52:00,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:00,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1606580247, now seen corresponding path program 2 times [2018-11-23 02:52:00,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:52:00,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:00,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:52:00,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:00,287 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:52:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:52:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:00,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:52:00,651 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:52:00,652 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 02:52:00,652 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 02:52:00,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:52:00,652 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 [2018-11-23 02:52:00,671 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 02:52:00,671 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 02:52:00,685 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 02:52:00,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:52:00,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:52:00,707 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-23 02:52:00,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:52:00,709 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,711 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,715 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:00,715 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-23 02:52:00,774 INFO L478 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 35 treesize of output 29 [2018-11-23 02:52:00,788 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 49 [2018-11-23 02:52:00,789 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-11-23 02:52:00,805 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:52:00,832 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-23 02:52:00,832 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:46, output treesize:110 [2018-11-23 02:52:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:00,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:52:01,052 INFO L478 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 37 treesize of output 33 [2018-11-23 02:52:01,075 INFO L478 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 1 case distinctions, treesize of input 19 treesize of output 23 [2018-11-23 02:52:01,076 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,080 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,087 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,088 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:51, output treesize:12 [2018-11-23 02:52:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:01,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:52:01,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2018-11-23 02:52:01,117 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:52:01,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 02:52:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 02:52:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-11-23 02:52:01,118 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2018-11-23 02:52:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:52:01,408 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-11-23 02:52:01,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 02:52:01,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2018-11-23 02:52:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:52:01,409 INFO L225 Difference]: With dead ends: 25 [2018-11-23 02:52:01,409 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 02:52:01,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2018-11-23 02:52:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 02:52:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 02:52:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 02:52:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-23 02:52:01,412 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2018-11-23 02:52:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:52:01,412 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-23 02:52:01,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 02:52:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-23 02:52:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-23 02:52:01,413 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 02:52:01,413 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 02:52:01,413 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 02:52:01,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:52:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash -750191843, now seen corresponding path program 3 times [2018-11-23 02:52:01,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 02:52:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:01,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:52:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:52:01,414 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 02:52:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:52:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:52:01,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:52:01,815 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 02:52:01,815 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 02:52:01,815 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 02:52:01,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:52:01,815 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/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 [2018-11-23 02:52:01,821 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 02:52:01,822 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 02:52:01,840 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 02:52:01,840 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:52:01,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:52:01,869 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-11-23 02:52:01,871 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 02:52:01,871 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,874 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,881 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:01,881 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-23 02:52:02,027 INFO L478 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 51 treesize of output 41 [2018-11-23 02:52:02,033 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,034 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,035 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,035 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,036 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,038 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 02:52:02,049 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 105 [2018-11-23 02:52:02,050 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-23 02:52:02,081 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 02:52:02,098 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-23 02:52:02,098 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:86 [2018-11-23 02:52:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:02,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 02:52:02,366 INFO L478 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 63 treesize of output 55 [2018-11-23 02:52:02,395 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,395 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,397 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,398 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,398 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,398 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 02:52:02,403 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 49 [2018-11-23 02:52:02,403 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 02:52:02,411 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:02,415 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 02:52:02,416 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:66, output treesize:24 [2018-11-23 02:52:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:52:02,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 02:52:02,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2018-11-23 02:52:02,439 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 02:52:02,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-23 02:52:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-23 02:52:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-11-23 02:52:02,440 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 23 states. [2018-11-23 02:52:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:52:02,955 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-11-23 02:52:02,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-23 02:52:02,955 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2018-11-23 02:52:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 02:52:02,956 INFO L225 Difference]: With dead ends: 24 [2018-11-23 02:52:02,956 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 02:52:02,957 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=425, Invalid=1555, Unknown=0, NotChecked=0, Total=1980 [2018-11-23 02:52:02,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 02:52:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 02:52:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 02:52:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 02:52:02,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-23 02:52:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 02:52:02,957 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:52:02,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-23 02:52:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:52:02,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 02:52:02,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 02:52:03,014 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:52:03,014 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:52:03,014 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:52:03,014 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 02:52:03,014 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 02:52:03,015 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 42) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 7 55) the Hoare annotation is: true [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 7 55) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L444 ceAbstractionStarter]: At program point L24(lines 17 45) the Hoare annotation is: (let ((.cse1 (* 4 main_~main__pos~0))) (let ((.cse0 (select |#memory_int| |main_~#main__a~0.base|)) (.cse2 (+ |main_~#main__a~0.offset| .cse1)) (.cse3 (= |main_~#main__a~0.offset| 0)) (.cse4 (< 0 (+ |main_~#main__a~0.offset| .cse1 1)))) (or (and (= main_~main__marker~0 (select .cse0 (+ .cse1 |main_~#main__a~0.offset|))) (not (= .cse2 0)) .cse3 .cse4 (< main_~main__i~0 (+ main_~main__pos~0 1))) (and (= main_~main__marker~0 (select .cse0 .cse2)) (= main_~main__i~0 0) .cse3 .cse4)))) [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 44) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 49) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 7 55) no Hoare annotation was computed. [2018-11-23 02:52:03,015 INFO L448 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-23 02:52:03,019 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,019 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,022 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,023 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:52:03 BoogieIcfgContainer [2018-11-23 02:52:03,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 02:52:03,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:52:03,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:52:03,024 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:52:03,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:51:58" (3/4) ... [2018-11-23 02:52:03,027 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 02:52:03,030 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 02:52:03,031 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 02:52:03,033 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 02:52:03,033 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 02:52:03,033 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 02:52:03,063 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4e22df01-7fc8-4f0b-b3b2-1b0431b42c34/bin-2019/utaipan/witness.graphml [2018-11-23 02:52:03,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:52:03,064 INFO L168 Benchmark]: Toolchain (without parser) took 4612.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.3 MB). Free memory was 958.1 MB in the beginning and 960.6 MB in the end (delta: -2.5 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,065 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-23 02:52:03,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.40 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,066 INFO L168 Benchmark]: Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:52:03,066 INFO L168 Benchmark]: RCFGBuilder took 235.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,066 INFO L168 Benchmark]: TraceAbstraction took 4133.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 965.5 MB in the end (delta: 154.5 MB). Peak memory consumption was 208.5 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,066 INFO L168 Benchmark]: Witness Printer took 39.08 ms. Allocated memory is still 1.2 GB. Free memory was 965.5 MB in the beginning and 960.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-11-23 02:52:03,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 166.23 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.4 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 17.40 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 235.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4133.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 965.5 MB in the end (delta: 154.5 MB). Peak memory consumption was 208.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.08 ms. Allocated memory is still 1.2 GB. Free memory was 965.5 MB in the beginning and 960.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 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 - 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: 35]: 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: 17]: Loop Invariant [2018-11-23 02:52:03,071 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,071 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,072 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 02:52:03,072 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((main__marker == unknown-#memory_int-unknown[main__a][4 * main__pos + main__a] && !(main__a + 4 * main__pos == 0)) && main__a == 0) && 0 < main__a + 4 * main__pos + 1) && main__i < main__pos + 1) || (((main__marker == unknown-#memory_int-unknown[main__a][main__a + 4 * main__pos] && main__i == 0) && main__a == 0) && 0 < main__a + 4 * main__pos + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 124 SDslu, 139 SDs, 0 SdLazy, 279 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 67 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 284 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 152 ConstructedInterpolants, 3 QuantifiedInterpolants, 30798 SizeOfPredicates, 36 NumberOfNonLiveVariables, 257 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 2/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...