./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.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_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 a9d9fdb967c829f2f7ee82db31bc122f536bc655 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:04:57,674 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:04:57,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:04:57,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:04:57,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:04:57,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:04:57,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:04:57,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:04:57,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:04:57,689 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:04:57,690 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:04:57,690 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:04:57,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:04:57,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:04:57,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:04:57,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:04:57,694 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:04:57,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:04:57,696 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:04:57,697 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:04:57,698 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:04:57,699 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:04:57,701 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:04:57,701 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:04:57,701 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:04:57,702 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:04:57,702 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:04:57,703 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:04:57,703 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:04:57,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:04:57,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:04:57,705 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:04:57,705 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:04:57,705 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:04:57,706 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:04:57,706 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:04:57,707 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:04:57,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:04:57,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:04:57,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:04:57,718 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:04:57,718 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:04:57,718 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:04:57,718 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:04:57,718 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:04:57,719 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:04:57,719 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:04:57,719 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:04:57,719 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:04:57,719 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:04:57,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:04:57,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:04:57,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:04:57,721 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:04:57,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:04:57,721 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:04:57,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:04:57,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:04:57,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:04:57,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:04:57,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:04:57,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:04:57,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:04:57,723 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:04:57,723 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_09c23e0b-b234-480b-8a62-47378c9eff53/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 -> a9d9fdb967c829f2f7ee82db31bc122f536bc655 [2018-11-23 13:04:57,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:04:57,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:04:57,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:04:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:04:57,762 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:04:57,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/../../sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-11-23 13:04:57,808 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/data/02982892f/5bdcd4d5a58946a188fc4de6e25c8dda/FLAGaff84abbc [2018-11-23 13:04:58,214 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:04:58,215 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/sv-benchmarks/c/loop-industry-pattern/aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-11-23 13:04:58,220 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/data/02982892f/5bdcd4d5a58946a188fc4de6e25c8dda/FLAGaff84abbc [2018-11-23 13:04:58,230 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/data/02982892f/5bdcd4d5a58946a188fc4de6e25c8dda [2018-11-23 13:04:58,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:04:58,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:04:58,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:04:58,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:04:58,239 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:04:58,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462bb081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58, skipping insertion in model container [2018-11-23 13:04:58,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:04:58,274 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:04:58,465 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:04:58,473 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:04:58,569 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:04:58,579 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:04:58,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58 WrapperNode [2018-11-23 13:04:58,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:04:58,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:04:58,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:04:58,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:04:58,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:04:58,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:04:58,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:04:58,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:04:58,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... [2018-11-23 13:04:58,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:04:58,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:04:58,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:04:58,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:04:58,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 13:04:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 13:04:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2018-11-23 13:04:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:04:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:04:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 13:04:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:04:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:04:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:04:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:04:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:04:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 13:04:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:04:59,150 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:04:59,150 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 13:04:59,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:59 BoogieIcfgContainer [2018-11-23 13:04:59,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:04:59,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:04:59,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:04:59,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:04:59,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:04:58" (1/3) ... [2018-11-23 13:04:59,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442931ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:04:59, skipping insertion in model container [2018-11-23 13:04:59,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:04:58" (2/3) ... [2018-11-23 13:04:59,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442931ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:04:59, skipping insertion in model container [2018-11-23 13:04:59,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:59" (3/3) ... [2018-11-23 13:04:59,157 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4_true-unreach-call.c.v+cfa-reducer.c [2018-11-23 13:04:59,164 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:04:59,170 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:04:59,180 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:04:59,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:04:59,206 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:04:59,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:04:59,206 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:04:59,206 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:04:59,206 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:04:59,207 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:04:59,207 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:04:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-23 13:04:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 13:04:59,225 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:59,225 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:59,227 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:59,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash -772479634, now seen corresponding path program 1 times [2018-11-23 13:04:59,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:04:59,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:59,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,267 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:04:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:59,447 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 13:04:59,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:59,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:04:59,450 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:04:59,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:04:59,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:04:59,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:59,469 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2018-11-23 13:04:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:59,521 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-11-23 13:04:59,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 13:04:59,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-23 13:04:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:59,531 INFO L225 Difference]: With dead ends: 35 [2018-11-23 13:04:59,531 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 13:04:59,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 13:04:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2018-11-23 13:04:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 13:04:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-23 13:04:59,560 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-11-23 13:04:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:59,561 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-23 13:04:59,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:04:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-23 13:04:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 13:04:59,562 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:59,562 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:59,562 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:59,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -772062560, now seen corresponding path program 1 times [2018-11-23 13:04:59,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:04:59,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:59,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:04:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:59,696 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 13:04:59,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:04:59,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 13:04:59,696 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:04:59,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 13:04:59,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 13:04:59,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 13:04:59,697 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-11-23 13:04:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:04:59,736 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-11-23 13:04:59,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 13:04:59,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-23 13:04:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:04:59,737 INFO L225 Difference]: With dead ends: 34 [2018-11-23 13:04:59,737 INFO L226 Difference]: Without dead ends: 24 [2018-11-23 13:04:59,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:04:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-23 13:04:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-11-23 13:04:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-23 13:04:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-23 13:04:59,741 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-11-23 13:04:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:04:59,741 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-23 13:04:59,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 13:04:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-23 13:04:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 13:04:59,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:04:59,742 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:04:59,742 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:04:59,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:04:59,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1935785144, now seen corresponding path program 1 times [2018-11-23 13:04:59,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:04:59,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:04:59,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:04:59,744 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:04:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:04:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:04:59,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:04:59,900 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:04:59,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-11-23 13:04:59,903 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [14], [17], [19], [22], [23], [25], [28], [31], [35], [36], [37] [2018-11-23 13:04:59,939 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 13:04:59,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 13:05:00,327 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 13:05:00,328 INFO L272 AbstractInterpreter]: Visited 16 different actions 32 times. Merged at 9 different actions 15 times. Never widened. Performed 636 root evaluator evaluations with a maximum evaluation depth of 6. Performed 636 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 2 fixpoints after 1 different actions. Largest state had 197 variables. [2018-11-23 13:05:00,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:05:00,336 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 13:05:00,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:00,336 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 13:05:00,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:05:00,351 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 13:05:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:00,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:05:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:00,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:00,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:05:00,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 13:05:00,548 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:05:00,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:05:00,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:05:00,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-23 13:05:00,549 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-11-23 13:05:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:05:00,650 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-11-23 13:05:00,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:05:00,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-23 13:05:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:05:00,651 INFO L225 Difference]: With dead ends: 40 [2018-11-23 13:05:00,652 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 13:05:00,652 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-23 13:05:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 13:05:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-11-23 13:05:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-23 13:05:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-11-23 13:05:00,658 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2018-11-23 13:05:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:05:00,658 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-11-23 13:05:00,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:05:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-11-23 13:05:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:05:00,659 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:05:00,659 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:05:00,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:05:00,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:05:00,660 INFO L82 PathProgramCache]: Analyzing trace with hash 941106672, now seen corresponding path program 2 times [2018-11-23 13:05:00,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:05:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:00,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:05:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:00,662 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:05:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:00,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:00,788 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:05:00,788 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 13:05:00,788 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 13:05:00,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:00,788 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 13:05:00,808 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 13:05:00,808 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 13:05:00,896 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 13:05:00,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:05:00,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:05:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:00,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:00,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:05:00,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2018-11-23 13:05:00,987 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:05:00,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 13:05:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 13:05:00,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:05:00,988 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2018-11-23 13:05:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:05:01,101 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-23 13:05:01,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 13:05:01,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-23 13:05:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:05:01,102 INFO L225 Difference]: With dead ends: 46 [2018-11-23 13:05:01,103 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 13:05:01,103 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-11-23 13:05:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 13:05:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-23 13:05:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 13:05:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-11-23 13:05:01,109 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 25 [2018-11-23 13:05:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:05:01,109 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-11-23 13:05:01,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 13:05:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-11-23 13:05:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-23 13:05:01,111 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:05:01,112 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:05:01,112 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:05:01,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:05:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1674089832, now seen corresponding path program 3 times [2018-11-23 13:05:01,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:05:01,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:01,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:05:01,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:01,113 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:05:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:01,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:05:01,217 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 13:05:01,217 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 13:05:01,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:01,217 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 13:05:01,235 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 13:05:01,235 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 13:05:01,289 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 13:05:01,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:05:01,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:05:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,321 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:05:01,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-11-23 13:05:01,414 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:05:01,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 13:05:01,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 13:05:01,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-11-23 13:05:01,415 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 8 states. [2018-11-23 13:05:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:05:01,561 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-11-23 13:05:01,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 13:05:01,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-23 13:05:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:05:01,564 INFO L225 Difference]: With dead ends: 52 [2018-11-23 13:05:01,564 INFO L226 Difference]: Without dead ends: 42 [2018-11-23 13:05:01,564 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-23 13:05:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-23 13:05:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-23 13:05:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 13:05:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-11-23 13:05:01,571 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2018-11-23 13:05:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:05:01,574 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-11-23 13:05:01,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 13:05:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-11-23 13:05:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 13:05:01,575 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:05:01,575 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:05:01,575 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:05:01,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:05:01,576 INFO L82 PathProgramCache]: Analyzing trace with hash 199921984, now seen corresponding path program 4 times [2018-11-23 13:05:01,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:05:01,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:01,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:05:01,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:01,577 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:05:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:01,694 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:05:01,694 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 13:05:01,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 13:05:01,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:01,694 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/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 [2018-11-23 13:05:01,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:05:01,703 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 13:05:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:01,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:05:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:01,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:05:01,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2018-11-23 13:05:01,923 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:05:01,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 13:05:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 13:05:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-23 13:05:01,924 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2018-11-23 13:05:02,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:05:02,082 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2018-11-23 13:05:02,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 13:05:02,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-11-23 13:05:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:05:02,083 INFO L225 Difference]: With dead ends: 58 [2018-11-23 13:05:02,083 INFO L226 Difference]: Without dead ends: 48 [2018-11-23 13:05:02,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2018-11-23 13:05:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-23 13:05:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-23 13:05:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 13:05:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-11-23 13:05:02,091 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 37 [2018-11-23 13:05:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:05:02,091 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-11-23 13:05:02,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 13:05:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-11-23 13:05:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-23 13:05:02,092 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:05:02,092 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:05:02,093 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:05:02,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:05:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1925178904, now seen corresponding path program 5 times [2018-11-23 13:05:02,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:05:02,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:02,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:05:02,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:05:02,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:05:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:05:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:05:02,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:02,210 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:05:02,210 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 13:05:02,210 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 13:05:02,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:05:02,210 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:05:02,218 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 13:05:02,218 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 13:05:02,333 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-23 13:05:02,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:05:02,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:05:02,421 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 13:05:02,421 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 13:05:02,440 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 19 treesize of output 15 [2018-11-23 13:05:02,449 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 15 treesize of output 12 [2018-11-23 13:05:02,450 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-23 13:05:02,455 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:05:02,462 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-23 13:05:02,463 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:24 [2018-11-23 13:05:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-23 13:05:02,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:05:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-23 13:05:02,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 13:05:02,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2018-11-23 13:05:02,773 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 13:05:02,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 13:05:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 13:05:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2018-11-23 13:05:02,774 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 15 states. [2018-11-23 13:05:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:05:03,436 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-11-23 13:05:03,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 13:05:03,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-23 13:05:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:05:03,437 INFO L225 Difference]: With dead ends: 64 [2018-11-23 13:05:03,437 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:05:03,438 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2018-11-23 13:05:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:05:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:05:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:05:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:05:03,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-11-23 13:05:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:05:03,439 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:05:03,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 13:05:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:05:03,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:05:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 13:05:03,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-23 13:05:03,679 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-23 13:05:03,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:05:03,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:05:03,679 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~Id_MCDC_93~0 0) [2018-11-23 13:05:03,679 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 13:05:03,679 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L159(lines 159 222) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 131 223) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L180(lines 180 215) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L178(lines 178 220) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 131 223) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L197(lines 197 207) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L191(line 191) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 131 223) the Hoare annotation is: (or (not (= 0 |old(~Id_MCDC_93~0)|)) (= ~Id_MCDC_93~0 0)) [2018-11-23 13:05:03,680 INFO L448 ceAbstractionStarter]: For program point L189(lines 189 208) no Hoare annotation was computed. [2018-11-23 13:05:03,680 INFO L444 ceAbstractionStarter]: At program point L214(lines 180 215) the Hoare annotation is: (let ((.cse0 (= main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse1 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse2 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)))) (.cse3 (= ~Id_MCDC_93~0 main_~Id_MCDC_89__Id_MCDC_96~0))) (or (not (= 0 |old(~Id_MCDC_93~0)|)) (and .cse0 .cse1 .cse2 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3) .cse3) (and .cse0 .cse1 .cse2 (< (mod ~Id_MCDC_93~0 4294967296) 42) (< (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296) 42) .cse3))) [2018-11-23 13:05:03,681 INFO L444 ceAbstractionStarter]: At program point L202(lines 165 221) the Hoare annotation is: (let ((.cse0 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse1 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (and (<= main_~Id_MCDC_89__Id_MCDC_96~0 1) .cse0 (<= 1 main_~Id_MCDC_89__Id_MCDC_96~0) .cse1 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 3)) (not (= 0 |old(~Id_MCDC_93~0)|)) (let ((.cse2 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296)) (.cse3 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (and (< .cse2 42) .cse0 (not (= (* 12 .cse3) 492)) (not (= 492 (* 12 .cse2))) .cse1 (< .cse3 42))) (and .cse0 (= ~Id_MCDC_93~0 0) .cse1 (= 0 main_~Id_MCDC_89__Id_MCDC_96~0)))) [2018-11-23 13:05:03,681 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2018-11-23 13:05:03,685 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,686 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,690 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,691 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,692 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,692 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,693 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,693 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,694 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,694 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:05:03 BoogieIcfgContainer [2018-11-23 13:05:03,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:05:03,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:05:03,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:05:03,696 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:05:03,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:04:59" (3/4) ... [2018-11-23 13:05:03,700 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:05:03,704 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 13:05:03,704 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 13:05:03,710 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 78 nodes and edges [2018-11-23 13:05:03,710 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2018-11-23 13:05:03,711 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-23 13:05:03,711 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-23 13:05:03,711 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 13:05:03,711 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 13:05:03,711 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:05:03,731 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) || !(0 == \old(Id_MCDC_93))) || ((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) && !(492 == 12 * ((Id_MCDC_93 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96) [2018-11-23 13:05:03,732 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0 == \old(Id_MCDC_93)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 % 4294967296 < 42) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) [2018-11-23 13:05:03,783 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_09c23e0b-b234-480b-8a62-47378c9eff53/bin-2019/utaipan/witness.graphml [2018-11-23 13:05:03,783 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:05:03,784 INFO L168 Benchmark]: Toolchain (without parser) took 5550.33 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 299.9 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 113.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,785 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:05:03,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -199.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,785 INFO L168 Benchmark]: Boogie Preprocessor took 48.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,786 INFO L168 Benchmark]: RCFGBuilder took 491.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 80.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,786 INFO L168 Benchmark]: TraceAbstraction took 4544.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,786 INFO L168 Benchmark]: Witness Printer took 87.53 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:05:03,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -199.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 491.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 80.0 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4544.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Witness Printer took 87.53 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 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 - 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 - 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: 191]: 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: 180]: Loop Invariant [2018-11-23 13:05:03,791 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,791 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,792 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,792 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(0 == \old(Id_MCDC_93)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96)) || (((((Id_MCDC_89____CPAchecker_TMP_1 == 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 % 4294967296 < 42) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) - InvariantResult [Line: 165]: Loop Invariant [2018-11-23 13:05:03,793 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,793 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,793 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,793 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,794 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-23 13:05:03,794 WARN L1272 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((Id_MCDC_89__Id_MCDC_96 <= 1 && Id_MCDC_89__Id_MCDC_95 == 0) && 1 <= Id_MCDC_89__Id_MCDC_96) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 3) || !(0 == \old(Id_MCDC_93))) || ((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && !(12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == 492)) && !(492 == 12 * ((Id_MCDC_93 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((Id_MCDC_89__Id_MCDC_95 == 0 && Id_MCDC_93 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 0 == Id_MCDC_89__Id_MCDC_96) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 107 SDtfs, 239 SDslu, 327 SDs, 0 SdLazy, 600 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 390 GetRequests, 277 SyntacticMatches, 14 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 22 NumberOfFragments, 178 HoareAnnotationTreeSize, 6 FomulaSimplifications, 3190 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 616 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 336 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 474 ConstructedInterpolants, 25 QuantifiedInterpolants, 111504 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2249 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 186/585 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...