./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:46:38,675 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:46:38,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:46:38,687 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:46:38,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:46:38,688 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:46:38,690 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:46:38,692 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:46:38,693 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:46:38,694 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:46:38,695 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:46:38,695 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:46:38,696 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:46:38,697 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:46:38,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:46:38,699 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:46:38,700 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:46:38,702 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:46:38,704 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:46:38,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:46:38,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:46:38,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:46:38,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:46:38,711 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:46:38,711 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:46:38,712 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:46:38,713 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:46:38,714 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:46:38,715 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:46:38,716 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:46:38,716 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:46:38,717 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:46:38,717 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:46:38,717 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:46:38,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:46:38,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:46:38,720 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 21:46:38,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:46:38,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:46:38,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:46:38,734 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:46:38,734 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:46:38,734 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:46:38,734 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 21:46:38,735 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:46:38,735 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 21:46:38,735 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 21:46:38,735 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:46:38,736 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:46:38,736 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:46:38,736 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:46:38,736 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:46:38,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:46:38,737 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:46:38,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:46:38,737 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:46:38,737 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:46:38,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:46:38,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:46:38,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:46:38,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:46:38,740 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:46:38,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:46:38,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:38,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:46:38,741 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:46:38,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:46:38,741 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 21:46:38,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:46:38,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:46:38,742 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:46:38,742 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_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-10-26 21:46:38,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:46:38,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:46:38,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:46:38,791 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:46:38,791 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:46:38,792 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:38,847 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/c7e074e2c/28391d5d6327490c81e41818734d599d/FLAG54a913683 [2018-10-26 21:46:39,227 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:46:39,228 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:39,234 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/c7e074e2c/28391d5d6327490c81e41818734d599d/FLAG54a913683 [2018-10-26 21:46:39,243 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/c7e074e2c/28391d5d6327490c81e41818734d599d [2018-10-26 21:46:39,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:46:39,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:46:39,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:39,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:46:39,255 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:46:39,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e1d618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39, skipping insertion in model container [2018-10-26 21:46:39,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:46:39,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:46:39,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:39,403 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:46:39,419 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:39,436 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:46:39,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39 WrapperNode [2018-10-26 21:46:39,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:39,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:39,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:46:39,437 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:46:39,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:39,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:46:39,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:46:39,469 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:46:39,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... [2018-10-26 21:46:39,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:46:39,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:46:39,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:46:39,493 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:46:39,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:46:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:46:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-10-26 21:46:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-10-26 21:46:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:46:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:46:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-10-26 21:46:39,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-10-26 21:46:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:46:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:46:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:46:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:46:40,088 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:46:40,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:40 BoogieIcfgContainer [2018-10-26 21:46:40,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:46:40,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:46:40,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:46:40,093 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:46:40,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:46:39" (1/3) ... [2018-10-26 21:46:40,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a67c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:40, skipping insertion in model container [2018-10-26 21:46:40,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:39" (2/3) ... [2018-10-26 21:46:40,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a67c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:40, skipping insertion in model container [2018-10-26 21:46:40,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:40" (3/3) ... [2018-10-26 21:46:40,097 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:40,106 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:46:40,116 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:46:40,130 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:46:40,156 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:46:40,156 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:46:40,157 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:46:40,157 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:46:40,157 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:46:40,157 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:46:40,157 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:46:40,158 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:46:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-10-26 21:46:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:46:40,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:40,178 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] [2018-10-26 21:46:40,179 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:40,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash -688452071, now seen corresponding path program 1 times [2018-10-26 21:46:40,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:40,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:40,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:46:40,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:40,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:46:40,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:46:40,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:40,307 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-10-26 21:46:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:40,331 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-10-26 21:46:40,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:46:40,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-10-26 21:46:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:40,342 INFO L225 Difference]: With dead ends: 71 [2018-10-26 21:46:40,342 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 21:46:40,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 21:46:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-26 21:46:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-10-26 21:46:40,387 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-10-26 21:46:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:40,388 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-10-26 21:46:40,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:46:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-10-26 21:46:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 21:46:40,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:40,390 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] [2018-10-26 21:46:40,391 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:40,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1409132855, now seen corresponding path program 1 times [2018-10-26 21:46:40,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:40,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:40,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:40,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:40,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:40,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:40,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:40,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:40,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:40,623 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-10-26 21:46:40,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:40,728 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-10-26 21:46:40,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:40,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-26 21:46:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:40,732 INFO L225 Difference]: With dead ends: 51 [2018-10-26 21:46:40,732 INFO L226 Difference]: Without dead ends: 40 [2018-10-26 21:46:40,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:40,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-26 21:46:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-26 21:46:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:46:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-10-26 21:46:40,751 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-10-26 21:46:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:40,751 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-10-26 21:46:40,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-10-26 21:46:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 21:46:40,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:40,753 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:40,755 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:40,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:40,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1379485408, now seen corresponding path program 1 times [2018-10-26 21:46:40,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:40,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:40,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:40,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:40,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:40,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 21:46:40,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:40,874 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-10-26 21:46:40,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:40,970 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-10-26 21:46:40,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:40,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 21:46:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:40,975 INFO L225 Difference]: With dead ends: 55 [2018-10-26 21:46:40,975 INFO L226 Difference]: Without dead ends: 44 [2018-10-26 21:46:40,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-26 21:46:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-26 21:46:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-26 21:46:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-10-26 21:46:40,980 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-10-26 21:46:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:40,980 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-10-26 21:46:40,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:40,980 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-10-26 21:46:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 21:46:40,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:40,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:40,982 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:40,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:40,983 INFO L82 PathProgramCache]: Analyzing trace with hash 128066401, now seen corresponding path program 1 times [2018-10-26 21:46:40,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 21:46:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:40,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:46:40,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 21:46:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:46:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:46:41,062 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:46:41,073 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,074 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,075 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,075 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,075 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,075 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,076 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,076 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,076 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,076 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,077 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,077 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,077 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,077 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,078 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,078 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,078 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,078 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,079 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,079 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,079 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,079 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,080 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,080 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,080 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,080 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,081 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-10-26 21:46:41,081 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-10-26 21:46:41,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:46:41 BoogieIcfgContainer [2018-10-26 21:46:41,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:46:41,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:46:41,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:46:41,105 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:46:41,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:40" (3/4) ... [2018-10-26 21:46:41,110 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 21:46:41,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:46:41,112 INFO L168 Benchmark]: Toolchain (without parser) took 1866.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -94.6 MB). Peak memory consumption was 41.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:41,114 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:41,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.93 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:41,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.75 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:41,115 INFO L168 Benchmark]: Boogie Preprocessor took 23.49 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:41,116 INFO L168 Benchmark]: RCFGBuilder took 596.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:41,116 INFO L168 Benchmark]: TraceAbstraction took 1014.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:41,117 INFO L168 Benchmark]: Witness Printer took 6.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:41,121 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.93 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.75 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.49 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 596.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -157.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1014.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L62] CALL, EXPR fmax_float(x, y) VAL [\old(x)=2139095045, \old(y)=2139095042] [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] CALL ieee_float_shape_type gf_u; [L23] RET ieee_float_shape_type gf_u; [L24] CALL gf_u.value = (x) [L24] RET gf_u.value = (x) [L25] CALL, EXPR gf_u.word [L25] RET, EXPR gf_u.word [L25] (w) = gf_u.word [L25] RET (w) = gf_u.word [L26] COND FALSE !(0) [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] RET return 0; [L43] EXPR __fpclassify_float(x) VAL [\old(x)=2139095045, \old(y)=2139095042, __fpclassify_float(x)=0, x=2139095045, y=2139095042] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] RET return y; VAL [\old(x)=2139095045, \old(y)=2139095042, \result=2139095042, x=2139095045, y=2139095042] [L62] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=2139095045, y=2139095042] [L62] float res = fmax_float(x, y); [L64] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095042] [L54] RET return x != x; VAL [\old(x)=2139095042, \result=0, x=2139095042] [L64] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095042, x=2139095045, y=2139095042] [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() VAL [res=2139095042, x=2139095045, y=2139095042] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 134 SDtfs, 0 SDslu, 158 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.23-1dbac8b [2018-10-26 21:46:43,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:46:43,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:46:43,184 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:46:43,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:46:43,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:46:43,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:46:43,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:46:43,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:46:43,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:46:43,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:46:43,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:46:43,195 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:46:43,196 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:46:43,198 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:46:43,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:46:43,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:46:43,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:46:43,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:46:43,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:46:43,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:46:43,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:46:43,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:46:43,210 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:46:43,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:46:43,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:46:43,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:46:43,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:46:43,214 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:46:43,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:46:43,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:46:43,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:46:43,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:46:43,217 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:46:43,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:46:43,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:46:43,219 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 21:46:43,233 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:46:43,233 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:46:43,234 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:46:43,234 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 21:46:43,234 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 21:46:43,235 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 21:46:43,235 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 21:46:43,235 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 21:46:43,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:46:43,236 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:46:43,236 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:46:43,237 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:46:43,238 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:46:43,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:46:43,239 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:46:43,239 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:46:43,239 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:46:43,239 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:46:43,240 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:46:43,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:43,240 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:46:43,240 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:46:43,240 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:46:43,240 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 21:46:43,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:46:43,241 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:46:43,241 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:46:43,241 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_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2018-10-26 21:46:43,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:46:43,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:46:43,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:46:43,327 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:46:43,327 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:46:43,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:43,385 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/784ad21cb/020fc0f75c3b470a8aac97b94b50131c/FLAG2528ae972 [2018-10-26 21:46:43,760 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:46:43,760 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/sv-benchmarks/c/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:43,765 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/784ad21cb/020fc0f75c3b470a8aac97b94b50131c/FLAG2528ae972 [2018-10-26 21:46:43,776 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/data/784ad21cb/020fc0f75c3b470a8aac97b94b50131c [2018-10-26 21:46:43,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:46:43,784 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 21:46:43,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:43,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:46:43,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:46:43,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:43" (1/1) ... [2018-10-26 21:46:43,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205a6579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:43, skipping insertion in model container [2018-10-26 21:46:43,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:46:43" (1/1) ... [2018-10-26 21:46:43,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:46:43,819 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:46:43,979 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:43,984 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:46:44,006 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:46:44,031 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:46:44,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44 WrapperNode [2018-10-26 21:46:44,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:46:44,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:44,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:46:44,033 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:46:44,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:46:44,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:46:44,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:46:44,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:46:44,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... [2018-10-26 21:46:44,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:46:44,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:46:44,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:46:44,112 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:46:44,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:46:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:46:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:46:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-10-26 21:46:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-10-26 21:46:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 21:46:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 21:46:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-10-26 21:46:44,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-10-26 21:46:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:46:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:46:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:46:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:46:44,775 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:46:44,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:44 BoogieIcfgContainer [2018-10-26 21:46:44,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:46:44,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:46:44,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:46:44,778 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:46:44,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:46:43" (1/3) ... [2018-10-26 21:46:44,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5027b4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:44, skipping insertion in model container [2018-10-26 21:46:44,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:46:44" (2/3) ... [2018-10-26 21:46:44,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5027b4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:46:44, skipping insertion in model container [2018-10-26 21:46:44,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:44" (3/3) ... [2018-10-26 21:46:44,781 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-10-26 21:46:44,789 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:46:44,796 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:46:44,806 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:46:44,831 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:46:44,831 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:46:44,831 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:46:44,831 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:46:44,831 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:46:44,832 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:46:44,832 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:46:44,832 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:46:44,832 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:46:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-10-26 21:46:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 21:46:44,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:44,851 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] [2018-10-26 21:46:44,853 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:44,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:44,858 INFO L82 PathProgramCache]: Analyzing trace with hash 454092354, now seen corresponding path program 1 times [2018-10-26 21:46:44,861 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:44,862 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:44,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:44,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:44,942 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:44,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:44,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:46:44,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:46:44,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:46:44,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:44,965 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-10-26 21:46:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:44,982 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-10-26 21:46:44,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:46:44,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-10-26 21:46:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:44,991 INFO L225 Difference]: With dead ends: 65 [2018-10-26 21:46:44,992 INFO L226 Difference]: Without dead ends: 33 [2018-10-26 21:46:44,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:46:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-26 21:46:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-26 21:46:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 21:46:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-10-26 21:46:45,031 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-10-26 21:46:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:45,031 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-10-26 21:46:45,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:46:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-10-26 21:46:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 21:46:45,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:45,033 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:45,033 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:45,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:45,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1280284357, now seen corresponding path program 1 times [2018-10-26 21:46:45,034 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:45,034 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:45,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:45,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:45,183 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:45,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:45,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:45,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:45,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:45,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,195 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-10-26 21:46:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:45,264 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-10-26 21:46:45,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:45,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-26 21:46:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:45,268 INFO L225 Difference]: With dead ends: 46 [2018-10-26 21:46:45,268 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 21:46:45,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 21:46:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-26 21:46:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-10-26 21:46:45,280 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-10-26 21:46:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:45,280 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-10-26 21:46:45,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-10-26 21:46:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-26 21:46:45,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:45,283 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] [2018-10-26 21:46:45,283 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:45,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1130727099, now seen corresponding path program 1 times [2018-10-26 21:46:45,284 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:45,284 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:45,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:45,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:45,517 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:45,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:45,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:45,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:45,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,529 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-10-26 21:46:45,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:45,606 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-10-26 21:46:45,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:45,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-26 21:46:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:45,610 INFO L225 Difference]: With dead ends: 49 [2018-10-26 21:46:45,611 INFO L226 Difference]: Without dead ends: 39 [2018-10-26 21:46:45,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-26 21:46:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-10-26 21:46:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-10-26 21:46:45,616 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-10-26 21:46:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:45,616 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-10-26 21:46:45,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-10-26 21:46:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 21:46:45,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:45,618 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] [2018-10-26 21:46:45,618 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:45,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 263717065, now seen corresponding path program 1 times [2018-10-26 21:46:45,619 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:45,619 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:45,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:45,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:45,799 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:45,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:45,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:45,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:45,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:45,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,814 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-10-26 21:46:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:45,844 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-10-26 21:46:45,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:45,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-10-26 21:46:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:45,851 INFO L225 Difference]: With dead ends: 49 [2018-10-26 21:46:45,851 INFO L226 Difference]: Without dead ends: 39 [2018-10-26 21:46:45,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-26 21:46:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-10-26 21:46:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-10-26 21:46:45,868 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-10-26 21:46:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:45,868 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-10-26 21:46:45,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-10-26 21:46:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 21:46:45,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:45,869 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] [2018-10-26 21:46:45,870 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:45,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash -631798839, now seen corresponding path program 1 times [2018-10-26 21:46:45,870 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:45,871 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 [2018-10-26 21:46:45,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:45,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:46,046 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:46,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:46,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:46,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:46,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:46,058 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-10-26 21:46:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:46,091 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-10-26 21:46:46,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:46,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-26 21:46:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:46,094 INFO L225 Difference]: With dead ends: 49 [2018-10-26 21:46:46,094 INFO L226 Difference]: Without dead ends: 39 [2018-10-26 21:46:46,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-26 21:46:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-10-26 21:46:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-10-26 21:46:46,103 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-10-26 21:46:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:46,103 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-10-26 21:46:46,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-10-26 21:46:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-26 21:46:46,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:46,104 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] [2018-10-26 21:46:46,105 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:46,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:46,105 INFO L82 PathProgramCache]: Analyzing trace with hash -925201846, now seen corresponding path program 1 times [2018-10-26 21:46:46,108 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:46,108 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:46,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:46,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:46,675 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:46,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:46,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 21:46:46,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:46:46,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:46:46,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:46:46,691 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-10-26 21:46:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:47,347 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-10-26 21:46:47,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:46:47,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-26 21:46:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:47,352 INFO L225 Difference]: With dead ends: 43 [2018-10-26 21:46:47,352 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 21:46:47,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:46:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 21:46:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-10-26 21:46:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 21:46:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-10-26 21:46:47,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-10-26 21:46:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:47,360 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-10-26 21:46:47,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:46:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-10-26 21:46:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 21:46:47,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:47,362 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:47,362 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:47,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1882790959, now seen corresponding path program 1 times [2018-10-26 21:46:47,363 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:47,363 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/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 [2018-10-26 21:46:47,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:47,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:46:47,479 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:47,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:47,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:47,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:47,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:47,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:47,489 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-10-26 21:46:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:47,528 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-10-26 21:46:47,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:47,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-26 21:46:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:47,530 INFO L225 Difference]: With dead ends: 46 [2018-10-26 21:46:47,530 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 21:46:47,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 21:46:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-26 21:46:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-10-26 21:46:47,537 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-10-26 21:46:47,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:47,537 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-10-26 21:46:47,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-10-26 21:46:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:46:47,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:47,538 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:47,538 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:47,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:47,539 INFO L82 PathProgramCache]: Analyzing trace with hash 222262197, now seen corresponding path program 1 times [2018-10-26 21:46:47,539 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:47,539 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:46:47,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:47,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:46:47,627 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:47,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:47,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:47,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:47,637 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-10-26 21:46:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:47,657 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-10-26 21:46:47,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:47,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 21:46:47,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:47,658 INFO L225 Difference]: With dead ends: 49 [2018-10-26 21:46:47,658 INFO L226 Difference]: Without dead ends: 39 [2018-10-26 21:46:47,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:47,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-26 21:46:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-10-26 21:46:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-10-26 21:46:47,663 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-10-26 21:46:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:47,664 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-10-26 21:46:47,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-10-26 21:46:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 21:46:47,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:47,665 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:47,665 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:47,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash -598048468, now seen corresponding path program 1 times [2018-10-26 21:46:47,665 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:47,666 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:47,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:47,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:47,966 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:47,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:47,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 21:46:47,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 21:46:47,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 21:46:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 21:46:47,979 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 10 states. [2018-10-26 21:46:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:48,313 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-10-26 21:46:48,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 21:46:48,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-10-26 21:46:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:48,315 INFO L225 Difference]: With dead ends: 44 [2018-10-26 21:46:48,315 INFO L226 Difference]: Without dead ends: 36 [2018-10-26 21:46:48,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-10-26 21:46:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-26 21:46:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-26 21:46:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-26 21:46:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-10-26 21:46:48,321 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-10-26 21:46:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:48,322 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-10-26 21:46:48,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 21:46:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-10-26 21:46:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 21:46:48,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:48,323 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:48,323 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:48,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1299113046, now seen corresponding path program 1 times [2018-10-26 21:46:48,324 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:48,324 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:48,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:48,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:48,473 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:48,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:48,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:46:48,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:46:48,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:46:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:46:48,495 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-10-26 21:46:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:48,608 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-10-26 21:46:48,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:46:48,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-10-26 21:46:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:48,610 INFO L225 Difference]: With dead ends: 46 [2018-10-26 21:46:48,610 INFO L226 Difference]: Without dead ends: 33 [2018-10-26 21:46:48,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:46:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-26 21:46:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-26 21:46:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 21:46:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-10-26 21:46:48,614 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-10-26 21:46:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:48,615 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-26 21:46:48,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:46:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-10-26 21:46:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 21:46:48,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:48,616 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:48,616 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:48,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -888133901, now seen corresponding path program 1 times [2018-10-26 21:46:48,617 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:48,617 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:48,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:48,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:46:48,738 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:48,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:48,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:48,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:48,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:48,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:48,763 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-10-26 21:46:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:48,779 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-10-26 21:46:48,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:48,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-26 21:46:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:48,782 INFO L225 Difference]: With dead ends: 46 [2018-10-26 21:46:48,782 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:46:48,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:46:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-10-26 21:46:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 21:46:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-10-26 21:46:48,785 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-10-26 21:46:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:48,786 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-26 21:46:48,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-10-26 21:46:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 21:46:48,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:48,787 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:48,787 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:48,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:48,788 INFO L82 PathProgramCache]: Analyzing trace with hash -2124286599, now seen corresponding path program 1 times [2018-10-26 21:46:48,788 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:48,788 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:48,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:48,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 21:46:48,893 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:48,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:48,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:48,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:48,906 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-10-26 21:46:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:48,974 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-10-26 21:46:48,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:46:48,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-10-26 21:46:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:48,976 INFO L225 Difference]: With dead ends: 46 [2018-10-26 21:46:48,976 INFO L226 Difference]: Without dead ends: 35 [2018-10-26 21:46:48,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-26 21:46:48,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-10-26 21:46:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-26 21:46:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-10-26 21:46:48,981 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-10-26 21:46:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:48,981 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-26 21:46:48,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-10-26 21:46:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 21:46:48,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:48,990 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:48,990 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:48,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1877277690, now seen corresponding path program 1 times [2018-10-26 21:46:48,991 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:48,991 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:49,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:49,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-26 21:46:49,198 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:49,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:49,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 21:46:49,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:46:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:46:49,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:46:49,214 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-10-26 21:46:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:49,365 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-10-26 21:46:49,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:46:49,365 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-10-26 21:46:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:49,366 INFO L225 Difference]: With dead ends: 33 [2018-10-26 21:46:49,366 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 21:46:49,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-26 21:46:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 21:46:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 21:46:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 21:46:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 21:46:49,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-10-26 21:46:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:49,367 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 21:46:49,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:46:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 21:46:49,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 21:46:49,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 21:46:49,550 INFO L425 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-10-26 21:46:49,551 INFO L428 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-10-26 21:46:49,551 INFO L425 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-10-26 21:46:49,551 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:46:49,551 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:46:49,551 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:46:49,551 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 21:46:49,551 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 21:46:49,551 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 21:46:49,551 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 21:46:49,552 INFO L425 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-10-26 21:46:49,552 INFO L421 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~res~0) (= .cse0 main_~y~0))) [2018-10-26 21:46:49,552 INFO L425 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-10-26 21:46:49,552 INFO L421 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~x~0) (= .cse0 main_~y~0))) [2018-10-26 21:46:49,552 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-10-26 21:46:49,552 INFO L425 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-10-26 21:46:49,552 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-10-26 21:46:49,552 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L428 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L421 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L421 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-10-26 21:46:49,553 INFO L425 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L428 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: true [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:49,554 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-10-26 21:46:49,554 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-10-26 21:46:49,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:46:49 BoogieIcfgContainer [2018-10-26 21:46:49,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:46:49,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:46:49,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:46:49,564 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:46:49,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:46:44" (3/4) ... [2018-10-26 21:46:49,569 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 21:46:49,575 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-10-26 21:46:49,575 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 21:46:49,575 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 21:46:49,575 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_float [2018-10-26 21:46:49,575 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-10-26 21:46:49,580 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2018-10-26 21:46:49,580 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-10-26 21:46:49,581 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 21:46:49,632 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ccdbd4d2-0687-40aa-9396-166c0a8b48ba/bin-2019/utaipan/witness.graphml [2018-10-26 21:46:49,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:46:49,633 INFO L168 Benchmark]: Toolchain (without parser) took 5849.14 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 234.4 MB). Free memory was 954.6 MB in the beginning and 1.2 GB in the end (delta: -261.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:49,634 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:49,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.12 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 942.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:49,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.05 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:49,635 INFO L168 Benchmark]: Boogie Preprocessor took 38.36 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:46:49,636 INFO L168 Benchmark]: RCFGBuilder took 663.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 937.1 MB in the beginning and 1.2 GB in the end (delta: -221.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:49,636 INFO L168 Benchmark]: TraceAbstraction took 4788.14 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 46.1 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -67.7 MB). Peak memory consumption was 291.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:49,637 INFO L168 Benchmark]: Witness Printer took 67.88 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-10-26 21:46:49,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 247.12 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 942.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.05 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.36 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 663.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 937.1 MB in the beginning and 1.2 GB in the end (delta: -221.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4788.14 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 46.1 MB). Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -67.7 MB). Peak memory consumption was 291.5 MB. Max. memory is 11.5 GB. * Witness Printer took 67.88 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 498 SDtfs, 31 SDslu, 1315 SDs, 0 SdLazy, 221 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21567 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...