./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 ca707ecc133af2ec0063556d89a3ce449d0860eb .................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 ca707ecc133af2ec0063556d89a3ce449d0860eb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:39,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:39,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:39,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:39,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:39,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:39,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:39,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:39,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:39,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:39,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:39,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:39,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:39,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:39,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:39,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:39,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:39,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:39,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:39,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:39,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:39,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:39,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:39,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:39,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:39,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:39,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:39,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:39,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:39,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:39,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:39,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:39,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:39,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:39,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:39,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:39,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:39,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:39,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:39,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:39,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:39,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:39,191 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:39,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:39,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:39,192 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:39,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:39,192 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:39,192 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:39,193 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:39,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:39,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:39,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:39,204 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:39,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:39,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:39,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:39,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:39,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:39,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:39,208 INFO L138 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_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 -> ca707ecc133af2ec0063556d89a3ce449d0860eb [2019-10-22 11:23:39,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:39,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:39,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:39,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:39,260 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:39,260 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 11:23:39,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/2a33c7884/aaddb4c02d984009a8ea3733ceccbd5e/FLAGfc2511ad9 [2019-10-22 11:23:39,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:39,697 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 11:23:39,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/2a33c7884/aaddb4c02d984009a8ea3733ceccbd5e/FLAGfc2511ad9 [2019-10-22 11:23:40,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/2a33c7884/aaddb4c02d984009a8ea3733ceccbd5e [2019-10-22 11:23:40,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:40,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:40,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:40,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:40,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:40,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55162313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40, skipping insertion in model container [2019-10-22 11:23:40,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,088 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:40,108 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:40,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:40,305 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:40,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:40,404 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:40,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40 WrapperNode [2019-10-22 11:23:40,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:40,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:40,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:40,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:40,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:40,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:40,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:40,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:40,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:40,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:40,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:40,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:40,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 [2019-10-22 11:23:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:40,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:40,763 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:40,763 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:23:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:40 BoogieIcfgContainer [2019-10-22 11:23:40,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:40,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:40,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:40,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:40,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:40" (1/3) ... [2019-10-22 11:23:40,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991f84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:40, skipping insertion in model container [2019-10-22 11:23:40,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (2/3) ... [2019-10-22 11:23:40,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7991f84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:40, skipping insertion in model container [2019-10-22 11:23:40,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:40" (3/3) ... [2019-10-22 11:23:40,779 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-22 11:23:40,789 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:40,795 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:23:40,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:23:40,828 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:40,829 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:40,829 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:40,829 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:40,829 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:40,829 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:40,829 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:40,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:23:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:23:40,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:40,850 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:23:40,852 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash 920081230, now seen corresponding path program 1 times [2019-10-22 11:23:40,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:40,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436879052] [2019-10-22 11:23:40,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:41,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436879052] [2019-10-22 11:23:41,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:41,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:41,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460562550] [2019-10-22 11:23:41,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:41,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:41,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:41,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:41,027 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2019-10-22 11:23:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:41,091 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-22 11:23:41,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:41,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 11:23:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:41,102 INFO L225 Difference]: With dead ends: 36 [2019-10-22 11:23:41,102 INFO L226 Difference]: Without dead ends: 11 [2019-10-22 11:23:41,105 INFO L600 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 [2019-10-22 11:23:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-10-22 11:23:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-10-22 11:23:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:23:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-10-22 11:23:41,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2019-10-22 11:23:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:41,138 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-10-22 11:23:41,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-10-22 11:23:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:41,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:41,139 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:41,139 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash -565045263, now seen corresponding path program 1 times [2019-10-22 11:23:41,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:41,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003227700] [2019-10-22 11:23:41,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:41,140 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:41,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:41,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003227700] [2019-10-22 11:23:41,184 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:41,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:41,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339836965] [2019-10-22 11:23:41,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:41,186 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:41,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:41,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:41,187 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2019-10-22 11:23:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:41,277 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-22 11:23:41,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:41,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 11:23:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:41,279 INFO L225 Difference]: With dead ends: 17 [2019-10-22 11:23:41,279 INFO L226 Difference]: Without dead ends: 15 [2019-10-22 11:23:41,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-22 11:23:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-10-22 11:23:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:23:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-22 11:23:41,284 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-10-22 11:23:41,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:41,285 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-22 11:23:41,285 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-22 11:23:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:23:41,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:41,286 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:41,286 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 889328994, now seen corresponding path program 1 times [2019-10-22 11:23:41,287 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:41,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369390410] [2019-10-22 11:23:41,287 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:41,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:41,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:41,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369390410] [2019-10-22 11:23:41,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400094125] [2019-10-22 11:23:41,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:41,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 11:23:41,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:41,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:41,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:41,648 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:41,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:41,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1899915086] [2019-10-22 11:23:41,736 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-22 11:23:41,779 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:23:41,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:23:42,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:42,059 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:23:42,064 INFO L168 Benchmark]: Toolchain (without parser) took 1992.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.3 MB in the beginning and 1.0 GB in the end (delta: -99.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:42,064 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:42,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -191.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:42,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:42,066 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:42,067 INFO L168 Benchmark]: RCFGBuilder took 313.37 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:42,067 INFO L168 Benchmark]: TraceAbstraction took 1295.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:42,072 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -191.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 313.37 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1295.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.3 MB). Peak memory consumption was 74.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:44,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:44,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:44,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:44,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:44,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:44,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:44,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:44,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:44,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:44,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:44,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:44,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:44,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:44,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:44,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:44,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:44,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:44,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:44,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:44,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:44,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:44,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:44,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:44,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:44,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:44,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:44,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:44,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:44,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:44,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:44,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:44,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:44,549 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:44,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:44,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:44,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:44,551 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:44,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:44,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:44,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:44,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:44,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:44,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:44,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:44,589 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:44,589 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:44,589 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:44,589 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:44,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:44,589 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:44,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:44,590 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:44,591 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:44,592 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:44,592 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:44,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:44,592 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:44,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:44,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:44,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:44,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:44,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:44,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:44,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:44,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:44,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:44,595 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:44,595 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:44,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:44,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:44,595 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 -> ca707ecc133af2ec0063556d89a3ce449d0860eb [2019-10-22 11:23:44,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:44,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:44,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:44,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:44,665 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:44,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 11:23:44,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/5f2a36c46/d756f26ca5a04d01b7e185608957ea61/FLAG6490c0973 [2019-10-22 11:23:45,129 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:45,130 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2019-10-22 11:23:45,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/5f2a36c46/d756f26ca5a04d01b7e185608957ea61/FLAG6490c0973 [2019-10-22 11:23:45,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/data/5f2a36c46/d756f26ca5a04d01b7e185608957ea61 [2019-10-22 11:23:45,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:45,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:45,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:45,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:45,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:45,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16eddeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45, skipping insertion in model container [2019-10-22 11:23:45,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,532 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:45,551 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:45,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:45,767 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:45,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:45,807 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:45,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45 WrapperNode [2019-10-22 11:23:45,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:45,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:45,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:45,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:45,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:45,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:45,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:45,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:45,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... [2019-10-22 11:23:45,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:45,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:45,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:45,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:45,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/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 [2019-10-22 11:23:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:46,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:46,176 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:46,177 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:23:46,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:46 BoogieIcfgContainer [2019-10-22 11:23:46,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:46,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:46,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:46,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:45" (1/3) ... [2019-10-22 11:23:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cddf97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:46, skipping insertion in model container [2019-10-22 11:23:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:45" (2/3) ... [2019-10-22 11:23:46,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cddf97f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:46, skipping insertion in model container [2019-10-22 11:23:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:46" (3/3) ... [2019-10-22 11:23:46,187 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-22 11:23:46,198 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:46,206 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-22 11:23:46,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-22 11:23:46,235 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:46,236 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:46,236 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:46,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:46,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:46,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:46,236 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:46,236 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-22 11:23:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:23:46,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:46,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:23:46,254 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash 920081230, now seen corresponding path program 1 times [2019-10-22 11:23:46,268 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [508274229] [2019-10-22 11:23:46,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,414 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508274229] [2019-10-22 11:23:46,452 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:46,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:23:46,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130447608] [2019-10-22 11:23:46,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:46,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:46,472 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-10-22 11:23:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:46,638 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-10-22 11:23:46,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:46,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-10-22 11:23:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:46,652 INFO L225 Difference]: With dead ends: 55 [2019-10-22 11:23:46,652 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 11:23:46,655 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:23:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 11:23:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-10-22 11:23:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:23:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-22 11:23:46,695 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 6 [2019-10-22 11:23:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:46,695 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-22 11:23:46,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:46,696 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-22 11:23:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:46,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:46,696 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:46,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,898 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,898 INFO L82 PathProgramCache]: Analyzing trace with hash -565045263, now seen corresponding path program 1 times [2019-10-22 11:23:46,898 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [875877978] [2019-10-22 11:23:46,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,017 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875877978] [2019-10-22 11:23:47,078 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:47,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:23:47,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518939582] [2019-10-22 11:23:47,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:23:47,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:47,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:23:47,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:47,082 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 8 states. [2019-10-22 11:23:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:47,337 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-10-22 11:23:47,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:23:47,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2019-10-22 11:23:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:47,338 INFO L225 Difference]: With dead ends: 25 [2019-10-22 11:23:47,339 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:23:47,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:23:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:23:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-22 11:23:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 11:23:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-10-22 11:23:47,347 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2019-10-22 11:23:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:47,348 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-10-22 11:23:47,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:23:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-10-22 11:23:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:47,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:47,349 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 11:23:47,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,550 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:47,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1648346642, now seen corresponding path program 1 times [2019-10-22 11:23:47,551 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:47,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [266806283] [2019-10-22 11:23:47,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,663 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [266806283] [2019-10-22 11:23:47,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671738713] [2019-10-22 11:23:47,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,842 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:47,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,997 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:23:47,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 9] total 16 [2019-10-22 11:23:47,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332623190] [2019-10-22 11:23:47,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 11:23:47,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:47,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 11:23:47,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:23:47,999 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 16 states. [2019-10-22 11:23:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:48,643 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2019-10-22 11:23:48,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-22 11:23:48,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2019-10-22 11:23:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:48,645 INFO L225 Difference]: With dead ends: 42 [2019-10-22 11:23:48,645 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 11:23:48,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=622, Unknown=0, NotChecked=0, Total=930 [2019-10-22 11:23:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 11:23:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 19. [2019-10-22 11:23:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:23:48,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-10-22 11:23:48,657 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2019-10-22 11:23:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:48,658 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-10-22 11:23:48,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 11:23:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-10-22 11:23:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:23:48,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:48,659 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 11:23:49,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:49,060 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:49,061 INFO L82 PathProgramCache]: Analyzing trace with hash 781964945, now seen corresponding path program 1 times [2019-10-22 11:23:49,061 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:49,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [158053019] [2019-10-22 11:23:49,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:49,145 WARN L254 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 11:23:49,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:49,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:49,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:49,420 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:49,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:49,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:49,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [158053019] [2019-10-22 11:23:49,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726556348] [2019-10-22 11:23:49,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:49,894 WARN L254 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-22 11:23:49,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:50,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:50,243 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:50,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:50,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:51,045 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:23:51,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14, 14] total 38 [2019-10-22 11:23:51,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053541760] [2019-10-22 11:23:51,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-10-22 11:23:51,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:51,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-10-22 11:23:51,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2019-10-22 11:23:51,047 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 38 states. [2019-10-22 11:23:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:53,128 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-10-22 11:23:53,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 11:23:53,128 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 18 [2019-10-22 11:23:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:53,129 INFO L225 Difference]: With dead ends: 43 [2019-10-22 11:23:53,129 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:23:53,130 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=785, Invalid=2521, Unknown=0, NotChecked=0, Total=3306 [2019-10-22 11:23:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:23:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-10-22 11:23:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 11:23:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2019-10-22 11:23:53,139 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 18 [2019-10-22 11:23:53,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:53,139 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2019-10-22 11:23:53,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-10-22 11:23:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2019-10-22 11:23:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:23:53,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:53,140 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2019-10-22 11:23:53,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:53,541 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:53,542 INFO L82 PathProgramCache]: Analyzing trace with hash -86508591, now seen corresponding path program 2 times [2019-10-22 11:23:53,542 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:53,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [933288164] [2019-10-22 11:23:53,542 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:53,590 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 11:23:53,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:23:53,591 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 11:23:53,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:53,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:53,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-22 11:23:53,670 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:53,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-22 11:23:53,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [933288164] [2019-10-22 11:23:53,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789030532] [2019-10-22 11:23:53,951 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:54,000 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 11:23:54,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:23:54,002 WARN L254 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:23:54,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:54,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:54,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-22 11:23:54,038 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:54,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:23:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-22 11:23:54,150 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:23:54,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 12 [2019-10-22 11:23:54,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390012448] [2019-10-22 11:23:54,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 11:23:54,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 11:23:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:23:54,152 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 12 states. [2019-10-22 11:23:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:54,365 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-10-22 11:23:54,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:54,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2019-10-22 11:23:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:54,367 INFO L225 Difference]: With dead ends: 39 [2019-10-22 11:23:54,367 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:23:54,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:23:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:23:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:23:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:23:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:23:54,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-22 11:23:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:54,370 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:23:54,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 11:23:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:23:54,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:23:54,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:54,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:23:54,904 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-10-22 11:23:55,217 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 15 [2019-10-22 11:23:55,377 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 18 [2019-10-22 11:23:55,434 INFO L443 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:23:55,434 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:23:55,434 INFO L439 ceAbstractionStarter]: At program point L4-5(lines 1 31) the Hoare annotation is: (and (bvsle (_ bv0 32) ULTIMATE.start_main_~glob2_p_off~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (bvslt ULTIMATE.start_main_~glob2_p_off~0 (bvadd ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv1 32))) (bvsgt ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv0 32))) [2019-10-22 11:23:55,434 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:23:55,435 INFO L446 ceAbstractionStarter]: At program point L30-1(lines 10 31) the Hoare annotation is: true [2019-10-22 11:23:55,435 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:23:55,436 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: (let ((.cse0 (bvslt ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv2147483647 32))) (.cse1 (= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0)) (.cse2 (bvsgt ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~glob2_p_off~0 (_ bv0 32))) (and (and (bvsle (_ bv0 32) ULTIMATE.start_main_~glob2_p_off~0) .cse0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse1 .cse2))) [2019-10-22 11:23:55,436 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:23:55,436 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (bvsle (_ bv0 32) ULTIMATE.start_main_~glob2_p_off~0) (bvsle ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (bvslt ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv2147483647 32)) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (bvsgt ULTIMATE.start_main_~MAXPATHLEN~0 (_ bv0 32))) [2019-10-22 11:23:55,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:55 BoogieIcfgContainer [2019-10-22 11:23:55,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:55,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:55,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:55,464 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:55,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:46" (3/4) ... [2019-10-22 11:23:55,468 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:23:55,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:23:55,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:23:55,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7014f1c2-f806-4e8e-9a8a-5c4171d25b2a/bin/utaipan/witness.graphml [2019-10-22 11:23:55,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:55,525 INFO L168 Benchmark]: Toolchain (without parser) took 10010.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 952.3 MB in the beginning and 849.4 MB in the end (delta: 102.9 MB). Peak memory consumption was 289.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,526 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:55,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,527 INFO L168 Benchmark]: Boogie Preprocessor took 24.31 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:55,527 INFO L168 Benchmark]: RCFGBuilder took 239.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,528 INFO L168 Benchmark]: TraceAbstraction took 9284.64 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 856.7 MB in the end (delta: 237.8 MB). Peak memory consumption was 307.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,528 INFO L168 Benchmark]: Witness Printer took 59.80 ms. Allocated memory is still 1.2 GB. Free memory was 856.7 MB in the beginning and 849.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:55,531 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 104.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -171.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.31 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 239.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9284.64 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 856.7 MB in the end (delta: 237.8 MB). Peak memory consumption was 307.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.80 ms. Allocated memory is still 1.2 GB. Free memory was 856.7 MB in the beginning and 849.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((~bvsle32(0bv32, glob2_p_off) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && glob2_pathlim_off == MAXPATHLEN) && ~bvslt32(glob2_p_off, ~bvadd64(MAXPATHLEN, 1bv32))) && ~bvsgt32(MAXPATHLEN, 0bv32) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((~bvslt32(MAXPATHLEN, 2147483647bv32) && glob2_pathlim_off == MAXPATHLEN) && ~bvsgt32(MAXPATHLEN, 0bv32)) && glob2_p_off == 0bv32) || ((((~bvsle32(0bv32, glob2_p_off) && ~bvslt32(MAXPATHLEN, 2147483647bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && glob2_pathlim_off == MAXPATHLEN) && ~bvsgt32(MAXPATHLEN, 0bv32)) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((~bvsle32(0bv32, glob2_p_off) && ~bvsle32(glob2_p_off, MAXPATHLEN)) && ~bvslt32(MAXPATHLEN, 2147483647bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && glob2_pathlim_off == MAXPATHLEN) && ~bvsgt32(MAXPATHLEN, 0bv32) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Result: SAFE, OverallTime: 9.2s, OverallIterations: 5, TraceHistogramMax: 7, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 37 SDtfs, 239 SDslu, 118 SDs, 0 SdLazy, 364 SolverSat, 208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 225 SyntacticMatches, 5 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 32 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 33 NumberOfFragments, 77 HoareAnnotationTreeSize, 5 FomulaSimplifications, 2774 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1006 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 158 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 300 ConstructedInterpolants, 64 QuantifiedInterpolants, 85175 SizeOfPredicates, 81 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 324/484 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...