./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1bb1ab9568ee745152e739ce24e42c87ec18cd6 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1bb1ab9568ee745152e739ce24e42c87ec18cd6 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:05:05,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:05:05,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:05:05,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:05:05,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:05:05,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:05:05,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:05:05,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:05:05,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:05:05,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:05:05,651 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:05:05,651 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:05:05,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:05:05,653 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:05:05,655 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:05:05,655 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:05:05,656 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:05:05,658 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:05:05,660 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:05:05,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:05:05,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:05:05,664 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:05:05,666 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:05:05,667 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:05:05,667 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:05:05,668 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:05:05,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:05:05,670 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:05:05,671 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:05:05,672 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:05:05,672 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:05:05,673 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:05:05,673 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:05:05,674 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:05:05,675 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:05:05,675 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:05:05,676 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-27 00:05:05,689 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:05:05,689 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:05:05,690 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:05:05,690 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:05:05,691 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:05:05,691 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:05:05,691 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:05:05,691 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:05:05,691 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:05:05,691 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:05:05,692 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:05:05,692 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:05:05,692 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:05:05,693 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:05:05,693 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:05:05,693 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:05:05,695 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:05:05,695 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:05:05,695 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:05:05,695 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:05:05,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:05:05,696 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:05:05,696 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:05:05,696 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:05:05,696 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:05:05,696 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:05:05,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:05:05,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:05:05,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:05:05,697 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:05:05,697 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:05:05,698 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:05:05,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:05:05,698 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:05:05,698 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1bb1ab9568ee745152e739ce24e42c87ec18cd6 [2018-10-27 00:05:05,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:05:05,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:05:05,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:05:05,747 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:05:05,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:05:05,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/../../sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i [2018-10-27 00:05:05,807 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/6374a3317/15d736b276a14b59b47f5a8b14b75fa6/FLAGaaf5c031b [2018-10-27 00:05:06,196 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:05:06,197 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i [2018-10-27 00:05:06,213 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/6374a3317/15d736b276a14b59b47f5a8b14b75fa6/FLAGaaf5c031b [2018-10-27 00:05:06,232 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/6374a3317/15d736b276a14b59b47f5a8b14b75fa6 [2018-10-27 00:05:06,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:05:06,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:05:06,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:05:06,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:05:06,244 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:05:06,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5105ccb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06, skipping insertion in model container [2018-10-27 00:05:06,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:05:06,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:05:06,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:05:06,542 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:05:06,630 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:05:06,658 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:05:06,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06 WrapperNode [2018-10-27 00:05:06,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:05:06,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:05:06,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:05:06,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:05:06,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:05:06,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:05:06,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:05:06,734 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:05:06,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... [2018-10-27 00:05:06,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:05:06,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:05:06,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:05:06,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:05:06,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:05:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:05:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:05:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:05:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:05:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:05:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:05:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:05:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 00:05:07,853 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:05:07,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:05:07 BoogieIcfgContainer [2018-10-27 00:05:07,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:05:07,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:05:07,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:05:07,858 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:05:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:05:06" (1/3) ... [2018-10-27 00:05:07,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47743568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:05:07, skipping insertion in model container [2018-10-27 00:05:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:06" (2/3) ... [2018-10-27 00:05:07,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47743568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:05:07, skipping insertion in model container [2018-10-27 00:05:07,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:05:07" (3/3) ... [2018-10-27 00:05:07,863 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr5_true-unreach-call.i [2018-10-27 00:05:07,871 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:05:07,876 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:05:07,890 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:05:07,916 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:05:07,916 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:05:07,917 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:05:07,917 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:05:07,917 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:05:07,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:05:07,918 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:05:07,918 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:05:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-10-27 00:05:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-27 00:05:07,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:07,937 INFO L375 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, 1, 1, 1] [2018-10-27 00:05:07,939 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:07,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:07,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1029062908, now seen corresponding path program 1 times [2018-10-27 00:05:07,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:07,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:07,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:07,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:07,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:08,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:08,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 00:05:08,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:08,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 00:05:08,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 00:05:08,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:05:08,086 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2018-10-27 00:05:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:08,105 INFO L93 Difference]: Finished difference Result 99 states and 135 transitions. [2018-10-27 00:05:08,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 00:05:08,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-10-27 00:05:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:08,114 INFO L225 Difference]: With dead ends: 99 [2018-10-27 00:05:08,114 INFO L226 Difference]: Without dead ends: 50 [2018-10-27 00:05:08,117 INFO L605 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 [2018-10-27 00:05:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-27 00:05:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-27 00:05:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-27 00:05:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-10-27 00:05:08,159 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 25 [2018-10-27 00:05:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:08,160 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-10-27 00:05:08,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 00:05:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-10-27 00:05:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 00:05:08,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:08,161 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:08,162 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:08,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:08,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1702974415, now seen corresponding path program 1 times [2018-10-27 00:05:08,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:08,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:08,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:08,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:08,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:08,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:08,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:05:08,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:08,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:05:08,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:05:08,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:05:08,490 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 5 states. [2018-10-27 00:05:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:08,641 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2018-10-27 00:05:08,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:05:08,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-10-27 00:05:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:08,642 INFO L225 Difference]: With dead ends: 58 [2018-10-27 00:05:08,642 INFO L226 Difference]: Without dead ends: 56 [2018-10-27 00:05:08,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:05:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-27 00:05:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-10-27 00:05:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-27 00:05:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2018-10-27 00:05:08,649 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 30 [2018-10-27 00:05:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:08,650 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2018-10-27 00:05:08,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:05:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2018-10-27 00:05:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 00:05:08,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:08,651 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:08,651 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:08,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:08,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1704821457, now seen corresponding path program 1 times [2018-10-27 00:05:08,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:08,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:08,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:08,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:08,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:08,964 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 11 [2018-10-27 00:05:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:08,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:08,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:05:08,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:08,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:05:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:05:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:05:08,988 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 4 states. [2018-10-27 00:05:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:09,259 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2018-10-27 00:05:09,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:05:09,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-27 00:05:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:09,264 INFO L225 Difference]: With dead ends: 102 [2018-10-27 00:05:09,264 INFO L226 Difference]: Without dead ends: 60 [2018-10-27 00:05:09,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:05:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-27 00:05:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-10-27 00:05:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 00:05:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-10-27 00:05:09,274 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2018-10-27 00:05:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:09,274 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-10-27 00:05:09,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:05:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-10-27 00:05:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-27 00:05:09,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:09,276 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:09,276 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:09,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:09,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1923271226, now seen corresponding path program 1 times [2018-10-27 00:05:09,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:09,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:09,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:09,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:09,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-27 00:05:09,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:09,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:05:09,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:09,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:05:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:05:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:05:09,627 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2018-10-27 00:05:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:09,923 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2018-10-27 00:05:09,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 00:05:09,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-10-27 00:05:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:09,925 INFO L225 Difference]: With dead ends: 116 [2018-10-27 00:05:09,925 INFO L226 Difference]: Without dead ends: 80 [2018-10-27 00:05:09,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:05:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-27 00:05:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2018-10-27 00:05:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 00:05:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-10-27 00:05:09,937 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 35 [2018-10-27 00:05:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:09,938 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-10-27 00:05:09,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:05:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-10-27 00:05:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-27 00:05:09,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:09,939 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:09,940 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:09,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1665185152, now seen corresponding path program 1 times [2018-10-27 00:05:09,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:09,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:09,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:09,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:09,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 00:05:10,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:10,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:05:10,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:10,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:05:10,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:05:10,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:05:10,057 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 3 states. [2018-10-27 00:05:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:10,161 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2018-10-27 00:05:10,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:05:10,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-27 00:05:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:10,162 INFO L225 Difference]: With dead ends: 112 [2018-10-27 00:05:10,162 INFO L226 Difference]: Without dead ends: 65 [2018-10-27 00:05:10,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:05:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-27 00:05:10,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-27 00:05:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 00:05:10,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2018-10-27 00:05:10,171 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 55 [2018-10-27 00:05:10,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:10,172 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2018-10-27 00:05:10,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:05:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2018-10-27 00:05:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-27 00:05:10,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:10,175 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:10,175 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:10,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:10,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1970250622, now seen corresponding path program 1 times [2018-10-27 00:05:10,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:10,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:10,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:10,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:10,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 00:05:10,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:10,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:05:10,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:05:10,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:05:10,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:05:10,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:05:10,311 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 3 states. [2018-10-27 00:05:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:10,478 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2018-10-27 00:05:10,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:05:10,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-27 00:05:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:10,480 INFO L225 Difference]: With dead ends: 88 [2018-10-27 00:05:10,480 INFO L226 Difference]: Without dead ends: 65 [2018-10-27 00:05:10,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:05:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-27 00:05:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-27 00:05:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-27 00:05:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2018-10-27 00:05:10,494 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 55 [2018-10-27 00:05:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:10,494 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2018-10-27 00:05:10,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:05:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2018-10-27 00:05:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-27 00:05:10,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:10,496 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:10,496 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:10,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1383444608, now seen corresponding path program 1 times [2018-10-27 00:05:10,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:10,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:10,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:10,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:10,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:11,440 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2018-10-27 00:05:11,609 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 24 [2018-10-27 00:05:11,788 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 30 [2018-10-27 00:05:12,051 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 30 [2018-10-27 00:05:12,440 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 22 [2018-10-27 00:05:13,056 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 25 [2018-10-27 00:05:13,388 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 31 [2018-10-27 00:05:13,917 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 33 [2018-10-27 00:05:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:14,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:05:14,574 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:05:14,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-10-27 00:05:14,577 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [16], [19], [21], [24], [28], [30], [34], [38], [41], [43], [46], [50], [52], [56], [60], [63], [65], [68], [72], [74], [78], [82], [85], [87], [90], [94], [96], [100], [104], [107], [109], [114], [116], [118], [122], [126], [131], [136], [151], [154], [156], [162], [163], [164], [166] [2018-10-27 00:05:14,632 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:05:14,633 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:05:14,934 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:05:34,297 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 00:05:34,299 INFO L272 AbstractInterpreter]: Visited 50 different actions 855 times. Merged at 30 different actions 690 times. Widened at 5 different actions 95 times. Found 120 fixpoints after 10 different actions. Largest state had 64 variables. [2018-10-27 00:05:34,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:34,346 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 00:05:34,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:05:34,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:05:34,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:34,361 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:05:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:34,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:05:35,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-10-27 00:05:35,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-10-27 00:05:35,294 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,317 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,442 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,442 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2018-10-27 00:05:35,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 77 [2018-10-27 00:05:35,680 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,681 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,681 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 68 [2018-10-27 00:05:35,694 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,695 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,696 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 50 [2018-10-27 00:05:35,716 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2018-10-27 00:05:35,723 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:35,724 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2018-10-27 00:05:35,725 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,766 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,921 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,932 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,935 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,943 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:35,943 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:104, output treesize:11 [2018-10-27 00:05:36,014 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-10-27 00:05:36,018 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 29 [2018-10-27 00:05:36,038 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,060 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,082 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,083 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:19 [2018-10-27 00:05:36,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2018-10-27 00:05:36,106 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,109 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2018-10-27 00:05:36,169 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,170 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,171 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 52 [2018-10-27 00:05:36,230 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2018-10-27 00:05:36,240 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-27 00:05:36,242 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,247 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,253 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,260 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,263 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,268 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,268 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:85, output treesize:11 [2018-10-27 00:05:36,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-10-27 00:05:36,300 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-10-27 00:05:36,303 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,308 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,314 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,314 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2018-10-27 00:05:36,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2018-10-27 00:05:36,329 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2018-10-27 00:05:36,340 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,341 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,342 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,347 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 52 [2018-10-27 00:05:36,354 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2018-10-27 00:05:36,360 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,361 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-27 00:05:36,362 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,367 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,373 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,376 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,466 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,570 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:85, output treesize:11 [2018-10-27 00:05:36,774 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-10-27 00:05:36,810 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:36,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-10-27 00:05:36,834 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:36,938 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,000 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,000 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2018-10-27 00:05:37,015 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2018-10-27 00:05:37,022 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2018-10-27 00:05:37,045 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,046 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,047 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 52 [2018-10-27 00:05:37,055 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2018-10-27 00:05:37,061 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-27 00:05:37,063 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,069 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,092 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,096 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,099 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,104 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,104 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 2 variables, input treesize:85, output treesize:11 [2018-10-27 00:05:37,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-10-27 00:05:37,136 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,137 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-10-27 00:05:37,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,143 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,149 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19 [2018-10-27 00:05:37,157 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:37,158 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 220 [2018-10-27 00:05:37,176 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 83 [2018-10-27 00:05:37,201 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,203 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 65 [2018-10-27 00:05:37,214 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,215 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,230 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 47 [2018-10-27 00:05:37,237 INFO L700 Elim1Store]: detected not equals via solver [2018-10-27 00:05:37,239 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 23 [2018-10-27 00:05:37,240 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,245 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,246 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,248 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,249 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,252 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 00:05:37,253 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 1 variables, input treesize:152, output treesize:11 [2018-10-27 00:05:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:37,354 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:05:47,078 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2018-10-27 00:05:47,089 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 90 [2018-10-27 00:05:47,099 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,100 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,100 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 74 [2018-10-27 00:05:47,122 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,122 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,123 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 56 [2018-10-27 00:05:47,131 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 00:05:47,133 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 35 [2018-10-27 00:05:47,153 INFO L477 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2018-10-27 00:05:47,154 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-10-27 00:05:47,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-10-27 00:05:47,157 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-27 00:05:47,169 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-27 00:05:47,206 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 00:05:47,245 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 00:05:47,297 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 00:05:47,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-27 00:05:47,328 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-27 00:05:47,328 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:128, output treesize:14 [2018-10-27 00:05:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 00:05:47,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 00:05:47,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 9] total 34 [2018-10-27 00:05:47,447 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 00:05:47,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-27 00:05:47,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-27 00:05:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=934, Unknown=4, NotChecked=0, Total=1122 [2018-10-27 00:05:47,449 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 28 states. [2018-10-27 00:05:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:50,253 INFO L93 Difference]: Finished difference Result 294 states and 360 transitions. [2018-10-27 00:05:50,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 00:05:50,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 55 [2018-10-27 00:05:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:50,258 INFO L225 Difference]: With dead ends: 294 [2018-10-27 00:05:50,258 INFO L226 Difference]: Without dead ends: 239 [2018-10-27 00:05:50,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 87 SyntacticMatches, 24 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=798, Invalid=2620, Unknown=4, NotChecked=0, Total=3422 [2018-10-27 00:05:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-27 00:05:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 68. [2018-10-27 00:05:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-27 00:05:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2018-10-27 00:05:50,283 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 55 [2018-10-27 00:05:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:50,284 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2018-10-27 00:05:50,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-27 00:05:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2018-10-27 00:05:50,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 00:05:50,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:50,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:50,288 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:50,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:50,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1855390773, now seen corresponding path program 1 times [2018-10-27 00:05:50,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:05:50,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:50,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:50,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:05:50,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:05:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:50,461 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 12. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,465 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 13. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,470 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 14. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,474 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 15. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,482 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 16. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,487 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 17. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,495 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 18. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,501 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 19. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,506 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 20. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,510 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 21. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,514 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 22. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,520 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 23. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,524 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 24. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,529 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 25. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,534 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 26. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,539 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 27. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,544 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 28. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,547 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 29. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,550 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 30. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,554 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 31. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,558 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 32. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,562 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 33. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,566 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 34. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,570 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 35. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,574 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 36. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,576 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 37. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,578 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 38. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,580 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 39. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,582 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 40. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,584 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 41. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,587 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 42. Subtree only symbols: [(main_~i~0_15 Int)]. Non-subtree only symbols: []. [2018-10-27 00:05:50,601 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2018-10-27 00:05:50,605 INFO L168 Benchmark]: Toolchain (without parser) took 44369.96 ms. Allocated memory was 1.0 GB in the beginning and 4.1 GB in the end (delta: 3.1 GB). Free memory was 959.8 MB in the beginning and 1.2 GB in the end (delta: -240.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,606 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:05:50,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.68 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.73 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,617 INFO L168 Benchmark]: Boogie Preprocessor took 174.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 943.7 MB in the beginning and 1.2 GB in the end (delta: -233.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,617 INFO L168 Benchmark]: RCFGBuilder took 945.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,619 INFO L168 Benchmark]: TraceAbstraction took 42749.61 ms. Allocated memory was 1.2 GB in the beginning and 4.1 GB in the end (delta: 2.9 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 11.5 GB. [2018-10-27 00:05:50,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 421.68 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 946.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.73 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 174.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.4 MB). Free memory was 943.7 MB in the beginning and 1.2 GB in the end (delta: -233.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 945.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 42749.61 ms. Allocated memory was 1.2 GB in the beginning and 4.1 GB in the end (delta: 2.9 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:05:53,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:05:53,004 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:05:53,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:05:53,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:05:53,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:05:53,027 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:05:53,029 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:05:53,031 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:05:53,032 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:05:53,033 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:05:53,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:05:53,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:05:53,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:05:53,044 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:05:53,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:05:53,046 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:05:53,048 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:05:53,052 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:05:53,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:05:53,055 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:05:53,056 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:05:53,070 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:05:53,070 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:05:53,071 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:05:53,071 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:05:53,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:05:53,074 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:05:53,075 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:05:53,076 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:05:53,076 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:05:53,076 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:05:53,077 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:05:53,077 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:05:53,084 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:05:53,085 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:05:53,085 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-27 00:05:53,107 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:05:53,108 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:05:53,109 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:05:53,109 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:05:53,109 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:05:53,110 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:05:53,110 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:05:53,110 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:05:53,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:05:53,111 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 00:05:53,111 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 00:05:53,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:05:53,111 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 00:05:53,112 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:05:53,113 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:05:53,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:05:53,113 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:05:53,115 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:05:53,116 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:05:53,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:05:53,116 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:05:53,116 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:05:53,116 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:05:53,117 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-27 00:05:53,117 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:05:53,117 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-27 00:05:53,117 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-27 00:05:53,117 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1bb1ab9568ee745152e739ce24e42c87ec18cd6 [2018-10-27 00:05:53,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:05:53,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:05:53,177 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:05:53,178 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:05:53,179 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:05:53,179 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/../../sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i [2018-10-27 00:05:53,249 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/2c325add1/ac8b024f8d554b14a2a752a1e5b63211/FLAG73de7ddc7 [2018-10-27 00:05:53,679 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:05:53,680 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/sv-benchmarks/c/array-tiling/mbpr5_true-unreach-call.i [2018-10-27 00:05:53,697 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/2c325add1/ac8b024f8d554b14a2a752a1e5b63211/FLAG73de7ddc7 [2018-10-27 00:05:53,719 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/data/2c325add1/ac8b024f8d554b14a2a752a1e5b63211 [2018-10-27 00:05:53,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:05:53,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 00:05:53,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:05:53,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:05:53,735 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:05:53,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:05:53" (1/1) ... [2018-10-27 00:05:53,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d41c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:53, skipping insertion in model container [2018-10-27 00:05:53,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:05:53" (1/1) ... [2018-10-27 00:05:53,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:05:53,773 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:05:53,990 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:05:53,994 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:05:54,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:05:54,084 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:05:54,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54 WrapperNode [2018-10-27 00:05:54,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:05:54,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:05:54,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:05:54,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:05:54,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:05:54,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:05:54,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:05:54,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:05:54,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... [2018-10-27 00:05:54,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:05:54,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:05:54,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:05:54,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:05:54,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:05:54,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:05:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:05:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:05:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:05:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:05:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:05:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-27 00:05:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-27 00:05:55,560 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:05:55,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:05:55 BoogieIcfgContainer [2018-10-27 00:05:55,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:05:55,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:05:55,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:05:55,567 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:05:55,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:05:53" (1/3) ... [2018-10-27 00:05:55,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2cb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:05:55, skipping insertion in model container [2018-10-27 00:05:55,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:05:54" (2/3) ... [2018-10-27 00:05:55,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2cb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:05:55, skipping insertion in model container [2018-10-27 00:05:55,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:05:55" (3/3) ... [2018-10-27 00:05:55,572 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr5_true-unreach-call.i [2018-10-27 00:05:55,583 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:05:55,593 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:05:55,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:05:55,641 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 00:05:55,642 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:05:55,642 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:05:55,642 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:05:55,642 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:05:55,643 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:05:55,643 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:05:55,643 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:05:55,643 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:05:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2018-10-27 00:05:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-27 00:05:55,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:55,671 INFO L375 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, 1, 1, 1] [2018-10-27 00:05:55,674 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:55,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1029062908, now seen corresponding path program 1 times [2018-10-27 00:05:55,683 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:05:55,683 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:05:55,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:55,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:05:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:55,788 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:05:55,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:55,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 00:05:55,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 00:05:55,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 00:05:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:05:55,816 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2018-10-27 00:05:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:55,843 INFO L93 Difference]: Finished difference Result 99 states and 135 transitions. [2018-10-27 00:05:55,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 00:05:55,845 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-10-27 00:05:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:55,854 INFO L225 Difference]: With dead ends: 99 [2018-10-27 00:05:55,854 INFO L226 Difference]: Without dead ends: 50 [2018-10-27 00:05:55,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 00:05:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-27 00:05:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-27 00:05:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-27 00:05:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2018-10-27 00:05:55,904 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 25 [2018-10-27 00:05:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:55,905 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2018-10-27 00:05:55,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 00:05:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2018-10-27 00:05:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 00:05:55,906 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:55,906 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:55,907 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:55,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1702974415, now seen corresponding path program 1 times [2018-10-27 00:05:55,907 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:05:55,908 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:05:55,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:55,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:05:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:56,088 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:05:56,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:56,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:05:56,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:05:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:05:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:05:56,097 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 5 states. [2018-10-27 00:05:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:56,272 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2018-10-27 00:05:56,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 00:05:56,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-10-27 00:05:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:56,274 INFO L225 Difference]: With dead ends: 58 [2018-10-27 00:05:56,274 INFO L226 Difference]: Without dead ends: 56 [2018-10-27 00:05:56,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:05:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-27 00:05:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-10-27 00:05:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-27 00:05:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2018-10-27 00:05:56,284 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 30 [2018-10-27 00:05:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:56,286 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2018-10-27 00:05:56,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:05:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2018-10-27 00:05:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 00:05:56,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:56,288 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:56,288 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:56,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:56,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1704821457, now seen corresponding path program 1 times [2018-10-27 00:05:56,289 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:05:56,289 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:05:56,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:56,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:05:56,713 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 00:05:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:56,750 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-27 00:05:56,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:05:56,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:05:56,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:05:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:05:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:05:56,760 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 4 states. [2018-10-27 00:05:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:05:57,935 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2018-10-27 00:05:57,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:05:57,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-27 00:05:57,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:05:57,943 INFO L225 Difference]: With dead ends: 102 [2018-10-27 00:05:57,944 INFO L226 Difference]: Without dead ends: 60 [2018-10-27 00:05:57,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:05:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-27 00:05:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-10-27 00:05:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 00:05:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2018-10-27 00:05:57,954 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 30 [2018-10-27 00:05:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:05:57,955 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2018-10-27 00:05:57,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:05:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2018-10-27 00:05:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-27 00:05:57,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:05:57,957 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:05:57,957 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:05:57,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:05:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1923271226, now seen corresponding path program 1 times [2018-10-27 00:05:57,958 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-27 00:05:57,958 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-27 00:05:57,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:05:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:05:58,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:05:58,728 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 00:05:59,078 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 00:05:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:05:59,085 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:06:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:06:00,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:06:00,483 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b66fd9cc-e4a8-4727-bf54-385d3fd8c795/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:06:00,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:06:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:06:00,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:06:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:06:01,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:06:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:06:01,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-10-27 00:06:01,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 6] total 15 [2018-10-27 00:06:01,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 00:06:01,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 00:06:01,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-10-27 00:06:01,605 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 15 states. [2018-10-27 00:06:02,213 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-27 00:06:02,470 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-27 00:06:03,131 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 00:06:03,740 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 00:06:13,200 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:689) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-10-27 00:06:13,209 INFO L168 Benchmark]: Toolchain (without parser) took 19473.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 949.2 MB in the beginning and 944.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 192.8 MB. Max. memory is 11.5 GB. [2018-10-27 00:06:13,210 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:06:13,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.27 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-27 00:06:13,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.87 ms. Allocated memory is still 1.0 GB. Free memory was 933.1 MB in the beginning and 927.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 00:06:13,212 INFO L168 Benchmark]: Boogie Preprocessor took 44.46 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 00:06:13,212 INFO L168 Benchmark]: RCFGBuilder took 1367.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -214.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2018-10-27 00:06:13,213 INFO L168 Benchmark]: TraceAbstraction took 17640.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.1 MB in the end (delta: 191.2 MB). Peak memory consumption was 191.2 MB. Max. memory is 11.5 GB. [2018-10-27 00:06:13,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 354.27 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.87 ms. Allocated memory is still 1.0 GB. Free memory was 933.1 MB in the beginning and 927.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.46 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1367.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -214.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17640.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 944.1 MB in the end (delta: 191.2 MB). Peak memory consumption was 191.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...