./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/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 a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b .................................................................................................................................................................................................................................................................................................................... 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_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/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 a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_2 term size 36 --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:18:49,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:18:49,617 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:18:49,625 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:18:49,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:18:49,626 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:18:49,627 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:18:49,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:18:49,629 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:18:49,630 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:18:49,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:18:49,631 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:18:49,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:18:49,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:18:49,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:18:49,633 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:18:49,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:18:49,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:18:49,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:18:49,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:18:49,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:18:49,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:18:49,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:18:49,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:18:49,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:18:49,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:18:49,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:18:49,642 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:18:49,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:18:49,643 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:18:49,643 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:18:49,644 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:18:49,644 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:18:49,644 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:18:49,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:18:49,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:18:49,646 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:18:49,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:18:49,655 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:18:49,655 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:18:49,656 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:18:49,656 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:18:49,657 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:18:49,657 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:18:49,657 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:18:49,657 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:18:49,658 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:18:49,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:18:49,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:18:49,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:18:49,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:18:49,660 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:18:49,660 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:18:49,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:18:49,660 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:18:49,660 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_b527dfd0-78f0-4f7d-a14f-337a08575ac7/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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2018-11-18 13:18:49,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:18:49,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:18:49,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:18:49,695 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:18:49,695 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:18:49,696 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c [2018-11-18 13:18:49,739 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/7baba0cf2/20a8edac953544fea8d1cefb6e789e99/FLAG69672f95f [2018-11-18 13:18:50,052 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:18:50,053 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c [2018-11-18 13:18:50,057 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/7baba0cf2/20a8edac953544fea8d1cefb6e789e99/FLAG69672f95f [2018-11-18 13:18:50,065 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/7baba0cf2/20a8edac953544fea8d1cefb6e789e99 [2018-11-18 13:18:50,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:18:50,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:18:50,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:18:50,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:18:50,070 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:18:50,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544e5471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50, skipping insertion in model container [2018-11-18 13:18:50,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:18:50,095 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:18:50,221 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:18:50,223 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:18:50,249 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:18:50,263 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:18:50,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50 WrapperNode [2018-11-18 13:18:50,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:18:50,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:18:50,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:18:50,263 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:18:50,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:18:50,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:18:50,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:18:50,323 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:18:50,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... [2018-11-18 13:18:50,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:18:50,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:18:50,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:18:50,352 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:18:50,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:18:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2018-11-18 13:18:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2018-11-18 13:18:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 13:18:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 13:18:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:18:50,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:18:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:18:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:18:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:18:50,618 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:18:50,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:50 BoogieIcfgContainer [2018-11-18 13:18:50,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:18:50,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:18:50,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:18:50,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:18:50,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:18:50" (1/3) ... [2018-11-18 13:18:50,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42090a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:50, skipping insertion in model container [2018-11-18 13:18:50,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:50" (2/3) ... [2018-11-18 13:18:50,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42090a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:50, skipping insertion in model container [2018-11-18 13:18:50,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:50" (3/3) ... [2018-11-18 13:18:50,624 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930_true-unreach-call.c [2018-11-18 13:18:50,632 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:18:50,639 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:18:50,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:18:50,673 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:18:50,673 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:18:50,673 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:18:50,674 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:18:50,674 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:18:50,674 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:18:50,674 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:18:50,674 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:18:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-11-18 13:18:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 13:18:50,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:18:50,689 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:18:50,691 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:18:50,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:18:50,695 INFO L82 PathProgramCache]: Analyzing trace with hash 317936643, now seen corresponding path program 1 times [2018-11-18 13:18:50,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:18:50,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:18:50,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:18:50,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:18:50,730 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:18:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:18:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:18:50,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:18:50,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:18:50,799 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:18:50,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:18:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:18:50,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:18:50,810 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-11-18 13:18:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:18:50,826 INFO L93 Difference]: Finished difference Result 84 states and 125 transitions. [2018-11-18 13:18:50,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:18:50,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 13:18:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:18:50,833 INFO L225 Difference]: With dead ends: 84 [2018-11-18 13:18:50,833 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 13:18:50,835 INFO L604 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 [2018-11-18 13:18:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 13:18:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-18 13:18:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 13:18:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-11-18 13:18:50,860 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2018-11-18 13:18:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:18:50,861 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-11-18 13:18:50,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:18:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-11-18 13:18:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 13:18:50,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:18:50,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:18:50,862 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:18:50,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:18:50,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1597723561, now seen corresponding path program 1 times [2018-11-18 13:18:50,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:18:50,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:18:50,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:18:50,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:18:50,863 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:18:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:18:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:18:50,920 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:18:50,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:18:50 BoogieIcfgContainer [2018-11-18 13:18:50,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:18:50,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:18:50,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:18:50,952 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:18:50,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:50" (3/4) ... [2018-11-18 13:18:50,955 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:18:50,955 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:18:50,955 INFO L168 Benchmark]: Toolchain (without parser) took 888.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 954.8 MB in the beginning and 1.0 GB in the end (delta: -85.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:18:50,956 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:18:50,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.37 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 937.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:18:50,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 937.7 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:18:50,957 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:18:50,958 INFO L168 Benchmark]: RCFGBuilder took 266.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:18:50,958 INFO L168 Benchmark]: TraceAbstraction took 332.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:18:50,958 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:18:50,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.37 ms. Allocated memory is still 1.0 GB. Free memory was 954.8 MB in the beginning and 937.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 937.7 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 266.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 332.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 149, overapproximation of bitwiseOr at line 59, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; VAL [\old(Lg1_log)=8589934605, \old(Lg2_log)=8589934608, \old(Lg3_log)=8589934592, \old(Lg4_log)=8589934595, \old(Lg5_log)=8589934597, \old(Lg6_log)=8589934602, \old(Lg7_log)=8589934601, \old(ln2_hi_log)=8589934594, \old(ln2_lo_log)=8589934598, \old(two54_log)=8589934603, \old(zero)=8589934606, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L144] double x = 1.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=1, zero=0] [L146] CALL, EXPR __ieee754_log(x) VAL [\old(x)=1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [\old(x)=1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=1, zero=0] [L51] FCALL ieee_double_shape_type ew_u; [L52] FCALL ew_u.value = (x) [L53] EXPR, FCALL ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR, FCALL ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L55] COND FALSE !(0) VAL [\old(x)=1, hx=-1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=15, two54_log=18014398509481984, x=1, zero=0] [L57] k = 0 VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=15, two54_log=18014398509481984, x=1, zero=0] [L58] COND TRUE hx < 0x00100000 VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=15, two54_log=18014398509481984, x=1, zero=0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] RET return -two54_log / zero; VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=15, two54_log=18014398509481984, x=1, zero=0] [L146] EXPR __ieee754_log(x) VAL [__ieee754_log(x)=8589934596, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=1, zero=0] [L146] double res = __ieee754_log(x); [L149] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=8589934596, res == 0.0 && __signbit_double(res) == 0=0, two54_log=18014398509481984, x=1, zero=0] [L149] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L150] __VERIFIER_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=8589934596, two54_log=18014398509481984, x=1, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 13:18:52,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:18:52,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:18:52,490 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:18:52,490 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:18:52,491 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:18:52,491 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:18:52,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:18:52,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:18:52,494 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:18:52,495 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:18:52,495 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:18:52,496 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:18:52,497 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:18:52,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:18:52,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:18:52,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:18:52,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:18:52,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:18:52,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:18:52,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:18:52,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:18:52,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:18:52,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:18:52,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:18:52,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:18:52,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:18:52,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:18:52,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:18:52,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:18:52,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:18:52,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:18:52,511 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:18:52,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:18:52,512 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:18:52,512 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:18:52,512 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 13:18:52,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:18:52,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:18:52,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:18:52,523 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:18:52,524 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:18:52,524 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:18:52,524 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:18:52,524 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:18:52,524 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:18:52,524 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:18:52,525 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:18:52,525 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:18:52,525 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:18:52,525 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:18:52,525 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:18:52,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:18:52,526 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:18:52,527 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:18:52,527 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:18:52,527 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:18:52,527 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:18:52,527 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:18:52,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:18:52,527 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:18:52,528 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:18:52,528 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_b527dfd0-78f0-4f7d-a14f-337a08575ac7/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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2018-11-18 13:18:52,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:18:52,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:18:52,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:18:52,569 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:18:52,569 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:18:52,569 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c [2018-11-18 13:18:52,619 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/6e23ffe33/bf85846e9b2b4a46978d3c4b2044ec0d/FLAGa18ac264e [2018-11-18 13:18:52,956 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:18:52,957 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/sv-benchmarks/c/float-newlib/double_req_bl_0930_true-unreach-call.c [2018-11-18 13:18:52,961 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/6e23ffe33/bf85846e9b2b4a46978d3c4b2044ec0d/FLAGa18ac264e [2018-11-18 13:18:53,379 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/data/6e23ffe33/bf85846e9b2b4a46978d3c4b2044ec0d [2018-11-18 13:18:53,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:18:53,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:18:53,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:18:53,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:18:53,385 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:18:53,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0661fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53, skipping insertion in model container [2018-11-18 13:18:53,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:18:53,414 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:18:53,585 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:18:53,590 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:18:53,621 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:18:53,641 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:18:53,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53 WrapperNode [2018-11-18 13:18:53,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:18:53,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:18:53,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:18:53,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:18:53,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:18:53,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:18:53,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:18:53,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:18:53,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... [2018-11-18 13:18:53,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:18:53,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:18:53,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:18:53,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:18:53,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:18:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 13:18:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2018-11-18 13:18:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2018-11-18 13:18:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 13:18:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-18 13:18:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-18 13:18:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:18:53,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:18:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:18:53,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:18:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:18:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:18:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:18:53,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:18:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:18:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:18:53,922 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:19:15,076 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:19:15,146 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:19:15,284 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 13:19:15,311 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:19:15,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:19:15 BoogieIcfgContainer [2018-11-18 13:19:15,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:19:15,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:19:15,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:19:15,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:19:15,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:18:53" (1/3) ... [2018-11-18 13:19:15,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b09c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:19:15, skipping insertion in model container [2018-11-18 13:19:15,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:53" (2/3) ... [2018-11-18 13:19:15,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b09c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:19:15, skipping insertion in model container [2018-11-18 13:19:15,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:19:15" (3/3) ... [2018-11-18 13:19:15,317 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930_true-unreach-call.c [2018-11-18 13:19:15,322 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:19:15,327 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:19:15,336 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:19:15,356 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:19:15,356 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:19:15,356 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:19:15,357 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:19:15,357 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:19:15,357 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:19:15,357 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:19:15,357 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:19:15,357 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:19:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-11-18 13:19:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 13:19:15,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:19:15,374 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:19:15,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:19:15,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:19:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash 317936643, now seen corresponding path program 1 times [2018-11-18 13:19:15,381 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:19:15,382 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 13:19:15,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:19:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:19:16,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:19:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:19:16,096 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:19:16,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:19:16,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:19:16,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:19:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:19:16,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:19:16,123 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-11-18 13:19:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:19:16,141 INFO L93 Difference]: Finished difference Result 84 states and 125 transitions. [2018-11-18 13:19:16,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:19:16,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-18 13:19:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:19:16,150 INFO L225 Difference]: With dead ends: 84 [2018-11-18 13:19:16,150 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 13:19:16,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:19:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 13:19:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-18 13:19:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 13:19:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2018-11-18 13:19:16,177 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2018-11-18 13:19:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:19:16,178 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2018-11-18 13:19:16,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:19:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2018-11-18 13:19:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 13:19:16,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:19:16,179 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:19:16,179 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:19:16,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:19:16,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1597723561, now seen corresponding path program 1 times [2018-11-18 13:19:16,180 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:19:16,180 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 13:19:16,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:19:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:19:16,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:19:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:19:17,016 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:19:17,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:19:17,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:19:17,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:19:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:19:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:19:17,040 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 6 states. [2018-11-18 13:19:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:19:28,868 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2018-11-18 13:19:29,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:19:29,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-18 13:19:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:19:29,442 INFO L225 Difference]: With dead ends: 72 [2018-11-18 13:19:29,442 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 13:19:29,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:19:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 13:19:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-11-18 13:19:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 13:19:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 13:19:29,448 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 19 [2018-11-18 13:19:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:19:29,448 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 13:19:29,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:19:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 13:19:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 13:19:29,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:19:29,449 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:19:29,449 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:19:29,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:19:29,449 INFO L82 PathProgramCache]: Analyzing trace with hash -342539656, now seen corresponding path program 1 times [2018-11-18 13:19:29,449 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:19:29,449 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 13:19:29,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:19:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:19:29,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:19:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:19:29,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:19:29,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:19:29,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:19:29,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:19:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:19:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:19:29,628 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2018-11-18 13:19:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:19:32,865 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-11-18 13:19:33,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:19:33,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-18 13:19:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:19:33,458 INFO L225 Difference]: With dead ends: 53 [2018-11-18 13:19:33,458 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 13:19:33,459 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:19:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 13:19:33,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 13:19:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 13:19:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-18 13:19:33,463 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-11-18 13:19:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:19:33,464 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-18 13:19:33,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:19:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-18 13:19:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 13:19:33,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:19:33,465 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] [2018-11-18 13:19:33,465 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:19:33,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:19:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash -306230941, now seen corresponding path program 1 times [2018-11-18 13:19:33,465 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:19:33,465 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 13:19:33,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:19:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:19:33,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:19:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:19:33,654 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:19:33,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:19:33,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:19:33,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:19:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:19:33,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:19:33,670 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2018-11-18 13:19:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:19:48,031 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-11-18 13:19:48,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 13:19:48,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-18 13:19:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:19:48,032 INFO L225 Difference]: With dead ends: 47 [2018-11-18 13:19:48,032 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:19:48,032 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:19:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:19:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-18 13:19:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 13:19:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2018-11-18 13:19:48,036 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 25 [2018-11-18 13:19:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:19:48,037 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2018-11-18 13:19:48,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:19:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2018-11-18 13:19:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 13:19:48,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:19:48,037 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] [2018-11-18 13:19:48,038 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:19:48,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:19:48,038 INFO L82 PathProgramCache]: Analyzing trace with hash 581272740, now seen corresponding path program 1 times [2018-11-18 13:19:48,038 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:19:48,038 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 13:19:48,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:19:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:19:48,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:19:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:19:48,916 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:19:48,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:19:48,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 13:19:48,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:19:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:19:48,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:19:48,936 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 9 states. [2018-11-18 13:20:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:20:16,920 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-11-18 13:20:16,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:20:16,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-11-18 13:20:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:20:16,923 INFO L225 Difference]: With dead ends: 59 [2018-11-18 13:20:16,923 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:20:16,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:20:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:20:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-11-18 13:20:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-18 13:20:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2018-11-18 13:20:16,929 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 25 [2018-11-18 13:20:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:20:16,929 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2018-11-18 13:20:16,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:20:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-11-18 13:20:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 13:20:16,930 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:20:16,930 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] [2018-11-18 13:20:16,930 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:20:16,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:20:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash -39562749, now seen corresponding path program 1 times [2018-11-18 13:20:16,931 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:20:16,931 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 13:20:16,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:20:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:20:17,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:20:17,917 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 132 treesize of output 126 [2018-11-18 13:20:17,922 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 121 [2018-11-18 13:20:17,938 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 70 treesize of output 60 [2018-11-18 13:20:17,939 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:20:17,945 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:20:17,950 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:20:17,974 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-11-18 13:20:17,974 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:154, output treesize:82 [2018-11-18 13:20:19,248 WARN L180 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-11-18 13:20:21,170 WARN L180 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-11-18 13:20:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:20:21,208 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:20:21,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:20:21,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 13:20:21,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:20:21,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:20:21,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:20:21,224 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 10 states. [2018-11-18 13:20:29,582 WARN L180 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 13:20:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:20:42,034 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-18 13:20:42,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:20:42,035 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-11-18 13:20:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:20:42,036 INFO L225 Difference]: With dead ends: 57 [2018-11-18 13:20:42,036 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 13:20:42,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:20:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 13:20:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:20:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:20:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-18 13:20:42,039 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 25 [2018-11-18 13:20:42,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:20:42,040 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-18 13:20:42,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:20:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-18 13:20:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 13:20:42,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:20:42,041 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] [2018-11-18 13:20:42,041 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:20:42,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:20:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1801008656, now seen corresponding path program 1 times [2018-11-18 13:20:42,041 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:20:42,041 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 13:20:42,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:20:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:20:45,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:20:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:20:45,963 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:20:46,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:20:46,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:20:46,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:20:46,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:20:46,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:20:46,008 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2018-11-18 13:20:49,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:20:49,980 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-11-18 13:20:49,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:20:49,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-18 13:20:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:20:49,983 INFO L225 Difference]: With dead ends: 52 [2018-11-18 13:20:49,983 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 13:20:49,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:20:49,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 13:20:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 13:20:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 13:20:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2018-11-18 13:20:49,987 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 25 [2018-11-18 13:20:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:20:49,988 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2018-11-18 13:20:49,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:20:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2018-11-18 13:20:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 13:20:49,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:20:49,989 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, 1, 1, 1] [2018-11-18 13:20:49,989 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:20:49,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:20:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1652179655, now seen corresponding path program 1 times [2018-11-18 13:20:49,989 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 13:20:49,989 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b527dfd0-78f0-4f7d-a14f-337a08575ac7/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 13:20:49,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:20:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:20:50,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:20:50,306 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,307 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,308 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,310 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,311 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,312 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:20:50,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 135 [2018-11-18 13:20:50,565 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2018-11-18 13:20:50,565 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_2 term size 36 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) 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.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) 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:434) 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) [2018-11-18 13:20:50,567 INFO L168 Benchmark]: Toolchain (without parser) took 117186.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -250.5 MB). Peak memory consumption was 270.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,568 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-11-18 13:20:50,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.56 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.09 ms. Allocated memory is still 1.0 GB. Free memory was 933.6 MB in the beginning and 928.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,569 INFO L168 Benchmark]: Boogie Preprocessor took 72.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 928.3 MB in the beginning and 1.2 GB in the end (delta: -228.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,569 INFO L168 Benchmark]: RCFGBuilder took 21577.33 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,569 INFO L168 Benchmark]: TraceAbstraction took 95255.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.2 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:20:50,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 259.56 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 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 19.09 ms. Allocated memory is still 1.0 GB. Free memory was 933.6 MB in the beginning and 928.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 928.3 MB in the beginning and 1.2 GB in the end (delta: -228.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 21577.33 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 95255.20 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -81.2 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_2 term size 36 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_2 term size 36: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...