./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/revcpyswp2.c --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_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/revcpyswp2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 c33603c51ccbfe3503a4ea2b26bc8ca99338e04c ......................................................................................................................................................................................................................................................................................................................................................................................................... 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_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/revcpyswp2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 c33603c51ccbfe3503a4ea2b26bc8ca99338e04c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: expected NNF --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:20:56,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:20:56,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:20:56,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:20:56,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:20:56,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:20:56,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:20:56,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:20:56,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:20:56,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:20:56,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:20:56,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:20:56,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:20:56,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:20:56,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:20:56,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:20:56,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:20:56,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:20:56,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:20:56,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:20:56,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:20:56,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:20:56,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:20:56,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:20:56,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:20:56,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:20:56,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:20:56,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:20:56,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:20:56,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:20:56,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:20:56,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:20:56,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:20:56,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:20:56,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:20:56,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:20:56,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:20:56,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:20:56,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:20:56,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:20:56,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:20:56,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:20:56,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:20:56,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:20:56,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:20:56,410 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:20:56,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:20:56,410 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:20:56,410 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:20:56,410 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:20:56,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:20:56,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:20:56,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:20:56,411 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:20:56,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:20:56,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:20:56,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:20:56,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:20:56,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:20:56,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:20:56,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:20:56,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:20:56,413 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:20:56,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:20:56,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:20:56,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:20:56,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:20:56,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:20:56,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:20:56,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:20:56,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:20:56,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:20:56,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:20:56,415 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:20:56,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:20:56,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:20:56,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:20:56,416 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_b1704eac-9097-4aa1-a170-dfacfea96787/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 -> c33603c51ccbfe3503a4ea2b26bc8ca99338e04c [2019-10-22 11:20:56,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:20:56,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:20:56,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:20:56,465 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:20:56,466 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:20:56,466 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/../../sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-10-22 11:20:56,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/4448545c4/c12268a24bb9466887fdff8b5fb50f3a/FLAG881cb308a [2019-10-22 11:20:56,895 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:20:56,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-10-22 11:20:56,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/4448545c4/c12268a24bb9466887fdff8b5fb50f3a/FLAG881cb308a [2019-10-22 11:20:57,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/4448545c4/c12268a24bb9466887fdff8b5fb50f3a [2019-10-22 11:20:57,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:20:57,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:20:57,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:57,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:20:57,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:20:57,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70f3443f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57, skipping insertion in model container [2019-10-22 11:20:57,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,313 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:20:57,332 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:20:57,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,522 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:20:57,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,551 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:20:57,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57 WrapperNode [2019-10-22 11:20:57,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:57,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:20:57,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:20:57,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:20:57,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:20:57,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:20:57,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:20:57,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:20:57,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:20:57,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:20:58,161 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:20:58,162 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-22 11:20:58,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58 BoogieIcfgContainer [2019-10-22 11:20:58,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:20:58,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:20:58,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:20:58,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:20:58,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:20:57" (1/3) ... [2019-10-22 11:20:58,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bfac80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (2/3) ... [2019-10-22 11:20:58,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bfac80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58" (3/3) ... [2019-10-22 11:20:58,171 INFO L109 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2019-10-22 11:20:58,180 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:20:58,187 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:20:58,194 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:20:58,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:20:58,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:20:58,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:20:58,215 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:20:58,215 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:20:58,215 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:20:58,215 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:20:58,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:20:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-22 11:20:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:20:58,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:58,234 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:58,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1560213877, now seen corresponding path program 1 times [2019-10-22 11:20:58,250 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:58,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766402845] [2019-10-22 11:20:58,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,369 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 11:20:58,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766402845] [2019-10-22 11:20:58,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:58,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:20:58,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865018225] [2019-10-22 11:20:58,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:20:58,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:58,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:20:58,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:20:58,390 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-22 11:20:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:58,407 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-10-22 11:20:58,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:20:58,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-22 11:20:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:58,418 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:20:58,418 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 11:20:58,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:20:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 11:20:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 11:20:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 11:20:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-22 11:20:58,451 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-10-22 11:20:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:58,452 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-22 11:20:58,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:20:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-22 11:20:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:20:58,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:58,452 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:58,453 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:58,453 INFO L82 PathProgramCache]: Analyzing trace with hash 631559685, now seen corresponding path program 1 times [2019-10-22 11:20:58,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:58,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729646393] [2019-10-22 11:20:58,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,518 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 11:20:58,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729646393] [2019-10-22 11:20:58,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:58,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:20:58,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936791191] [2019-10-22 11:20:58,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:20:58,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:58,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:20:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:58,521 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-22 11:20:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:58,571 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2019-10-22 11:20:58,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:20:58,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-22 11:20:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:58,572 INFO L225 Difference]: With dead ends: 39 [2019-10-22 11:20:58,572 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:20:58,573 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:20:58,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-10-22 11:20:58,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 11:20:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-22 11:20:58,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-10-22 11:20:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:58,577 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-22 11:20:58,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:20:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-22 11:20:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:20:58,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:58,578 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:58,578 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash -971977821, now seen corresponding path program 1 times [2019-10-22 11:20:58,578 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:58,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306056915] [2019-10-22 11:20:58,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:20:58,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306056915] [2019-10-22 11:20:58,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:58,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:20:58,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708244472] [2019-10-22 11:20:58,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:20:58,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:58,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:20:58,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:20:58,635 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-10-22 11:20:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:58,709 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-10-22 11:20:58,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:20:58,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-22 11:20:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:58,710 INFO L225 Difference]: With dead ends: 48 [2019-10-22 11:20:58,710 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 11:20:58,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:20:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 11:20:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-10-22 11:20:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 11:20:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-22 11:20:58,716 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2019-10-22 11:20:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:58,716 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-22 11:20:58,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:20:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-22 11:20:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:20:58,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:58,717 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:58,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1185722883, now seen corresponding path program 1 times [2019-10-22 11:20:58,718 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:58,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220018988] [2019-10-22 11:20:58,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,718 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:20:58,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220018988] [2019-10-22 11:20:58,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452310682] [2019-10-22 11:20:58,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:20:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:20:58,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:20:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:20:58,929 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:20:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:20:58,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [27173967] [2019-10-22 11:20:58,971 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-10-22 11:20:59,006 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:20:59,006 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:20:59,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:20:59,284 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 11:20:59,289 INFO L168 Benchmark]: Toolchain (without parser) took 1989.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.4 MB in the beginning and 1.0 GB in the end (delta: -83.7 MB). Peak memory consumption was 53.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:20:59,290 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:20:59,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:20:59,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.31 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 11:20:59,295 INFO L168 Benchmark]: Boogie Preprocessor took 45.56 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:20:59,295 INFO L168 Benchmark]: RCFGBuilder took 514.14 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:20:59,296 INFO L168 Benchmark]: TraceAbstraction took 1123.10 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 11:20:59,298 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.31 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 45.56 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 514.14 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1123.10 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 11:21:01,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:01,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:01,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:01,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:01,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:01,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:01,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:01,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:01,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:01,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:01,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:01,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:01,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:01,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:01,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:01,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:01,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:01,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:01,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:01,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:01,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:01,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:01,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:01,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:01,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:01,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:01,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:01,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:01,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:01,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:01,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:01,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:01,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:01,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:01,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:01,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:01,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:01,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:01,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:01,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:01,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:01,490 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:01,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:01,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:01,491 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:01,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:01,491 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:01,491 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:01,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:01,492 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:01,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:01,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:01,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:01,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:01,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:01,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:01,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:01,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:01,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:01,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:01,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:01,496 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:01,496 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:01,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:01,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:01,497 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_b1704eac-9097-4aa1-a170-dfacfea96787/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 -> c33603c51ccbfe3503a4ea2b26bc8ca99338e04c [2019-10-22 11:21:01,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:01,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:01,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:01,538 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:01,538 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:01,538 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/../../sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-10-22 11:21:01,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/116ddfe0d/215e0994db7b4ceeaae291d623877a5f/FLAGfce8bc62f [2019-10-22 11:21:01,950 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:01,952 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/sv-benchmarks/c/array-tiling/revcpyswp2.c [2019-10-22 11:21:01,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/116ddfe0d/215e0994db7b4ceeaae291d623877a5f/FLAGfce8bc62f [2019-10-22 11:21:02,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/bin/utaipan/data/116ddfe0d/215e0994db7b4ceeaae291d623877a5f [2019-10-22 11:21:02,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:02,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:02,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:02,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:02,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:02,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529d0700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02, skipping insertion in model container [2019-10-22 11:21:02,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,343 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:02,362 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:02,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:02,562 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:02,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:02,617 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:02,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02 WrapperNode [2019-10-22 11:21:02,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:02,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:02,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:02,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:02,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:02,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:02,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:02,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:02,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... [2019-10-22 11:21:02,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:02,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:02,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:02,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:02,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 11:21:02,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:21:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:02,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:02,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:21:03,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:03,091 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-22 11:21:03,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:03 BoogieIcfgContainer [2019-10-22 11:21:03,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:03,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:03,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:03,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:03,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:02" (1/3) ... [2019-10-22 11:21:03,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5809f244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:03, skipping insertion in model container [2019-10-22 11:21:03,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:02" (2/3) ... [2019-10-22 11:21:03,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5809f244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:03, skipping insertion in model container [2019-10-22 11:21:03,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:03" (3/3) ... [2019-10-22 11:21:03,099 INFO L109 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2019-10-22 11:21:03,108 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:03,115 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:03,124 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:03,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:03,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:03,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:03,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:03,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:03,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:03,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:03,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-22 11:21:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:21:03,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:03,166 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:03,168 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:03,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1560213877, now seen corresponding path program 1 times [2019-10-22 11:21:03,187 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:03,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1898852928] [2019-10-22 11:21:03,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:03,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:21:03,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:03,334 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 11:21:03,335 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:03,338 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 11:21:03,339 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1898852928] [2019-10-22 11:21:03,340 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:03,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:03,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869369060] [2019-10-22 11:21:03,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:03,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:03,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:03,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:03,361 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-22 11:21:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:03,382 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-10-22 11:21:03,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:03,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-22 11:21:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:03,394 INFO L225 Difference]: With dead ends: 45 [2019-10-22 11:21:03,395 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 11:21:03,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 11:21:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 11:21:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 11:21:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-22 11:21:03,428 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2019-10-22 11:21:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:03,429 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-22 11:21:03,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-22 11:21:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:21:03,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:03,430 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:03,630 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:03,631 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash 631559685, now seen corresponding path program 1 times [2019-10-22 11:21:03,632 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:03,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1582167212] [2019-10-22 11:21:03,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:03,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:03,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:03,782 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 11:21:03,782 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:03,823 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 11:21:03,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582167212] [2019-10-22 11:21:03,828 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:03,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-10-22 11:21:03,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780547896] [2019-10-22 11:21:03,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:03,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:03,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:03,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:03,831 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-10-22 11:21:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:04,008 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2019-10-22 11:21:04,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:04,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 11:21:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:04,009 INFO L225 Difference]: With dead ends: 40 [2019-10-22 11:21:04,010 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 11:21:04,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 11:21:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-22 11:21:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 11:21:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-22 11:21:04,017 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2019-10-22 11:21:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:04,017 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-22 11:21:04,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-22 11:21:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:21:04,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:04,018 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:04,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:04,219 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash -78261823, now seen corresponding path program 1 times [2019-10-22 11:21:04,220 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:04,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1955053317] [2019-10-22 11:21:04,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:04,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:21:04,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:04,459 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 11:21:04,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:04,622 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 11:21:04,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1955053317] [2019-10-22 11:21:04,623 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162861460] [2019-10-22 11:21:04,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:04,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:04,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:21:04,712 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:21:04,723 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:21:04,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7] total 14 [2019-10-22 11:21:04,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824882904] [2019-10-22 11:21:04,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:21:04,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:04,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:21:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:21:04,729 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2019-10-22 11:21:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:05,030 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2019-10-22 11:21:05,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:05,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-10-22 11:21:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:05,032 INFO L225 Difference]: With dead ends: 53 [2019-10-22 11:21:05,032 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 11:21:05,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:21:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 11:21:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2019-10-22 11:21:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 11:21:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-22 11:21:05,045 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 18 [2019-10-22 11:21:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:05,046 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-22 11:21:05,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:21:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-22 11:21:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:21:05,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:05,047 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:05,448 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 11:21:05,448 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:05,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1519365621, now seen corresponding path program 1 times [2019-10-22 11:21:05,449 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:05,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1741823732] [2019-10-22 11:21:05,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1704eac-9097-4aa1-a170-dfacfea96787/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 11:21:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:05,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 37 conjunts are in the unsatisfiable core [2019-10-22 11:21:05,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:05,907 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:21:05,908 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2019-10-22 11:21:05,909 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 11:21:05,936 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:21:05,936 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:21:05,937 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:31 [2019-10-22 11:21:10,865 WARN L191 SmtUtils]: Spent 4.69 s on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-10-22 11:21:10,866 INFO L341 Elim1Store]: treesize reduction 20, result has 94.1 percent of original size [2019-10-22 11:21:10,867 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 443 [2019-10-22 11:21:10,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,918 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,975 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:10,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:10,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:10,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:11,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:11,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:11,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:11,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:11,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:11,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:11,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:11,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:21:11,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-22 11:21:11,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:11,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-22 11:21:11,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:11,221 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) 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 11:21:11,225 INFO L168 Benchmark]: Toolchain (without parser) took 8895.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 951.0 MB in the beginning and 822.1 MB in the end (delta: 128.9 MB). Peak memory consumption was 232.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,225 INFO L168 Benchmark]: CDTParser took 0.16 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 11:21:11,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.60 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,226 INFO L168 Benchmark]: Boogie Preprocessor took 36.39 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 11:21:11,227 INFO L168 Benchmark]: RCFGBuilder took 330.26 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,227 INFO L168 Benchmark]: TraceAbstraction took 8130.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 822.1 MB in the end (delta: 249.0 MB). Peak memory consumption was 249.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:11,230 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 288.60 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 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 103.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 940.2 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.39 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 330.26 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: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8130.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 822.1 MB in the end (delta: 249.0 MB). Peak memory consumption was 249.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...