./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ..................................................................................................................................................................................................................................................................................................................................................................................................... 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_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:26:57,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:26:57,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:26:57,526 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:26:57,527 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:26:57,527 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:26:57,528 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:26:57,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:26:57,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:26:57,531 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:26:57,531 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:26:57,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:26:57,532 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:26:57,533 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:26:57,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:26:57,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:26:57,535 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:26:57,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:26:57,537 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:26:57,538 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:26:57,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:26:57,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:26:57,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:26:57,541 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:26:57,542 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:26:57,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:26:57,543 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:26:57,544 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:26:57,544 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:26:57,545 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:26:57,545 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:26:57,546 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:26:57,546 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:26:57,546 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:26:57,546 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:26:57,547 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:26:57,547 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:26:57,556 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:26:57,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:26:57,557 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:26:57,557 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:26:57,558 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:26:57,558 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:26:57,559 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:26:57,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:26:57,559 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:26:57,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:26:57,559 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:26:57,559 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:26:57,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:26:57,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:26:57,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:26:57,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:26:57,563 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:26:57,563 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_661e5473-efdc-43ac-9a9f-a8eb7613207e/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-18 17:26:57,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:26:57,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:26:57,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:26:57,606 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:26:57,607 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:26:57,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:26:57,650 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/c35b868bb/e1349cfbb7bc4834bc2e9ade3b68553b/FLAG1a52ca751 [2018-11-18 17:26:58,042 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:26:58,042 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:26:58,047 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/c35b868bb/e1349cfbb7bc4834bc2e9ade3b68553b/FLAG1a52ca751 [2018-11-18 17:26:58,056 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/c35b868bb/e1349cfbb7bc4834bc2e9ade3b68553b [2018-11-18 17:26:58,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:26:58,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:26:58,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:26:58,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:26:58,062 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:26:58,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c1dea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58, skipping insertion in model container [2018-11-18 17:26:58,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:26:58,085 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:26:58,201 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:26:58,203 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:26:58,220 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:26:58,233 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:26:58,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58 WrapperNode [2018-11-18 17:26:58,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:26:58,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:26:58,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:26:58,234 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:26:58,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:26:58,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:26:58,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:26:58,252 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:26:58,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... [2018-11-18 17:26:58,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:26:58,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:26:58,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:26:58,314 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:26:58,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:26:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:26:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:26:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 17:26:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 17:26:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:26:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:26:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 17:26:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 17:26:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:26:58,573 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:26:58,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:26:58 BoogieIcfgContainer [2018-11-18 17:26:58,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:26:58,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:26:58,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:26:58,578 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:26:58,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:26:58" (1/3) ... [2018-11-18 17:26:58,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254cc1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:26:58, skipping insertion in model container [2018-11-18 17:26:58,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:26:58" (2/3) ... [2018-11-18 17:26:58,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254cc1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:26:58, skipping insertion in model container [2018-11-18 17:26:58,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:26:58" (3/3) ... [2018-11-18 17:26:58,581 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:26:58,589 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:26:58,596 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:26:58,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:26:58,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:26:58,639 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:26:58,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:26:58,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:26:58,639 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:26:58,639 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:26:58,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:26:58,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:26:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-18 17:26:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 17:26:58,660 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:26:58,661 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] [2018-11-18 17:26:58,663 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:26:58,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:26:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1632563656, now seen corresponding path program 1 times [2018-11-18 17:26:58,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:26:58,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:26:58,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,705 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:26:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:26:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:26:58,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:26:58,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:26:58,771 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:26:58,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:26:58,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:26:58,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:26:58,784 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-18 17:26:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:26:58,800 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-18 17:26:58,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:26:58,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-18 17:26:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:26:58,808 INFO L225 Difference]: With dead ends: 79 [2018-11-18 17:26:58,808 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 17:26:58,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:26:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 17:26:58,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 17:26:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 17:26:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-18 17:26:58,839 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-18 17:26:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:26:58,839 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-18 17:26:58,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:26:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-18 17:26:58,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 17:26:58,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:26:58,841 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] [2018-11-18 17:26:58,841 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:26:58,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:26:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash -330285144, now seen corresponding path program 1 times [2018-11-18 17:26:58,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:26:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:26:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,843 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:26:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:26:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:26:58,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:26:58,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:26:58,907 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:26:58,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:26:58,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:26:58,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:26:58,909 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-18 17:26:58,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:26:58,934 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-18 17:26:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:26:58,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-18 17:26:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:26:58,936 INFO L225 Difference]: With dead ends: 59 [2018-11-18 17:26:58,937 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 17:26:58,937 INFO L604 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 [2018-11-18 17:26:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 17:26:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 17:26:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:26:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 17:26:58,945 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-18 17:26:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:26:58,945 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 17:26:58,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:26:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 17:26:58,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:26:58,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:26:58,947 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] [2018-11-18 17:26:58,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:26:58,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:26:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1694694321, now seen corresponding path program 1 times [2018-11-18 17:26:58,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:26:58,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:26:58,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:58,948 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:26:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:26:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:26:58,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:26:58,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:26:58,996 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:26:58,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:26:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:26:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:26:58,997 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-18 17:26:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:26:59,028 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-18 17:26:59,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:26:59,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-18 17:26:59,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:26:59,030 INFO L225 Difference]: With dead ends: 63 [2018-11-18 17:26:59,030 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 17:26:59,031 INFO L604 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 [2018-11-18 17:26:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 17:26:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 17:26:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:26:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-18 17:26:59,037 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-18 17:26:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:26:59,038 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-18 17:26:59,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:26:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-18 17:26:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:26:59,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:26:59,039 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] [2018-11-18 17:26:59,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:26:59,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:26:59,040 INFO L82 PathProgramCache]: Analyzing trace with hash 803321616, now seen corresponding path program 1 times [2018-11-18 17:26:59,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:26:59,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:59,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:26:59,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:26:59,041 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:26:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:26:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:26:59,079 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:26:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:26:59 BoogieIcfgContainer [2018-11-18 17:26:59,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:26:59,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:26:59,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:26:59,098 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:26:59,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:26:58" (3/4) ... [2018-11-18 17:26:59,101 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 17:26:59,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:26:59,101 INFO L168 Benchmark]: Toolchain (without parser) took 1043.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -95.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:26:59,102 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-18 17:26:59,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.58 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 945.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:26:59,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:26:59,104 INFO L168 Benchmark]: Boogie Preprocessor took 61.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:26:59,104 INFO L168 Benchmark]: RCFGBuilder took 260.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:26:59,105 INFO L168 Benchmark]: TraceAbstraction took 521.89 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: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:26:59,105 INFO L168 Benchmark]: Witness Printer took 3.17 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. [2018-11-18 17:26:59,107 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.58 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 945.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.61 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 260.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 521.89 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: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.17 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=4286578690] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] FCALL ieee_float_shape_type gf_u; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [L27] COND FALSE !(0) VAL [\old(x)=0, w=4286578689, x=0] [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] RET return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] RET return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578690, x=0, y=4286578690] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578690, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578690] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 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 0.1.23-5842f4b [2018-11-18 17:27:00,564 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:27:00,565 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:27:00,575 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:27:00,575 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:27:00,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:27:00,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:27:00,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:27:00,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:27:00,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:27:00,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:27:00,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:27:00,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:27:00,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:27:00,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:27:00,584 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:27:00,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:27:00,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:27:00,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:27:00,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:27:00,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:27:00,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:27:00,592 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:27:00,593 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:27:00,593 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:27:00,593 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:27:00,595 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:27:00,595 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:27:00,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:27:00,597 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:27:00,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:27:00,598 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:27:00,598 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:27:00,598 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:27:00,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:27:00,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:27:00,600 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 17:27:00,611 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:27:00,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:27:00,612 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:27:00,612 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:27:00,612 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:27:00,612 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:27:00,612 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:27:00,612 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:27:00,612 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:27:00,613 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:27:00,613 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:27:00,613 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:27:00,613 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:27:00,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:27:00,615 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:27:00,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:27:00,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:27:00,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:27:00,617 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 17:27:00,618 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_661e5473-efdc-43ac-9a9f-a8eb7613207e/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2018-11-18 17:27:00,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:27:00,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:27:00,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:27:00,660 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:27:00,661 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:27:00,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:27:00,701 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/df7fb0366/76885f648b1a43bf9abc20e695b7c205/FLAGb510b11e3 [2018-11-18 17:27:01,002 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:27:01,003 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/sv-benchmarks/c/float-newlib/float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:27:01,007 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/df7fb0366/76885f648b1a43bf9abc20e695b7c205/FLAGb510b11e3 [2018-11-18 17:27:01,015 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/data/df7fb0366/76885f648b1a43bf9abc20e695b7c205 [2018-11-18 17:27:01,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:27:01,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:27:01,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:27:01,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:27:01,022 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:27:01,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1c7639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01, skipping insertion in model container [2018-11-18 17:27:01,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:27:01,044 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:27:01,167 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:27:01,170 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:27:01,188 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:27:01,205 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:27:01,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01 WrapperNode [2018-11-18 17:27:01,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:27:01,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:27:01,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:27:01,206 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:27:01,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:27:01,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:27:01,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:27:01,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:27:01,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... [2018-11-18 17:27:01,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:27:01,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:27:01,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:27:01,253 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:27:01,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:27:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:27:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:27:01,337 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-11-18 17:27:01,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-18 17:27:01,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:27:01,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:27:01,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:27:01,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-18 17:27:01,339 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-18 17:27:01,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-18 17:27:01,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:27:01,498 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:27:01,521 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 17:27:01,525 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:27:01,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:27:01 BoogieIcfgContainer [2018-11-18 17:27:01,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:27:01,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:27:01,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:27:01,530 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:27:01,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:27:01" (1/3) ... [2018-11-18 17:27:01,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9d935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:27:01, skipping insertion in model container [2018-11-18 17:27:01,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:27:01" (2/3) ... [2018-11-18 17:27:01,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9d935a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:27:01, skipping insertion in model container [2018-11-18 17:27:01,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:27:01" (3/3) ... [2018-11-18 17:27:01,533 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b_false-unreach-call.c [2018-11-18 17:27:01,540 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:27:01,545 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:27:01,554 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:27:01,575 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:27:01,576 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:27:01,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:27:01,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:27:01,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:27:01,576 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:27:01,576 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:27:01,576 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:27:01,576 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:27:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-18 17:27:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 17:27:01,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:01,593 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] [2018-11-18 17:27:01,595 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:01,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1894631508, now seen corresponding path program 1 times [2018-11-18 17:27:01,601 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:01,601 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:01,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:01,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:27:01,664 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:01,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:01,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:27:01,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:27:01,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:27:01,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:27:01,687 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-18 17:27:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:01,703 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-18 17:27:01,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:27:01,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-18 17:27:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:01,712 INFO L225 Difference]: With dead ends: 75 [2018-11-18 17:27:01,712 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 17:27:01,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:27:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 17:27:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-18 17:27:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 17:27:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 17:27:01,745 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 17:27:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:01,745 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 17:27:01,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:27:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 17:27:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 17:27:01,747 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:01,747 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] [2018-11-18 17:27:01,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:01,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:01,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1732468330, now seen corresponding path program 1 times [2018-11-18 17:27:01,748 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:01,748 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:01,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:01,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:27:01,822 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:01,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:01,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:27:01,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:27:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:27:01,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:27:01,832 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 17:27:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:01,861 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 17:27:01,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:27:01,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-18 17:27:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:01,863 INFO L225 Difference]: With dead ends: 56 [2018-11-18 17:27:01,864 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 17:27:01,864 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:27:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 17:27:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 17:27:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 17:27:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-18 17:27:01,870 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-18 17:27:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:01,870 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 17:27:01,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:27:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-18 17:27:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 17:27:01,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:01,872 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] [2018-11-18 17:27:01,872 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:01,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash 253537577, now seen corresponding path program 1 times [2018-11-18 17:27:01,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:01,873 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:01,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:01,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:27:02,012 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:02,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:02,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 17:27:02,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 17:27:02,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 17:27:02,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:27:02,020 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-18 17:27:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:02,364 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-18 17:27:02,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:27:02,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-18 17:27:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:02,365 INFO L225 Difference]: With dead ends: 60 [2018-11-18 17:27:02,365 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 17:27:02,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:27:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 17:27:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-18 17:27:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 17:27:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 17:27:02,370 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-18 17:27:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:02,370 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 17:27:02,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 17:27:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 17:27:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 17:27:02,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:02,371 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] [2018-11-18 17:27:02,371 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:02,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1880877620, now seen corresponding path program 1 times [2018-11-18 17:27:02,371 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:02,371 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:02,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:02,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 17:27:02,419 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:02,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:02,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:27:02,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:27:02,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:27:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:27:02,427 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-18 17:27:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:02,438 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-18 17:27:02,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:27:02,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-18 17:27:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:02,440 INFO L225 Difference]: With dead ends: 56 [2018-11-18 17:27:02,440 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 17:27:02,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:27:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 17:27:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 17:27:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 17:27:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-18 17:27:02,444 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-18 17:27:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:02,444 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-18 17:27:02,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:27:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-18 17:27:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 17:27:02,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:02,445 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] [2018-11-18 17:27:02,445 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:02,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1523154087, now seen corresponding path program 1 times [2018-11-18 17:27:02,445 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:02,446 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:02,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:02,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 17:27:02,598 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:02,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:02,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 17:27:02,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 17:27:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 17:27:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:27:02,610 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-18 17:27:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:02,894 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-18 17:27:02,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:27:02,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-18 17:27:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:02,895 INFO L225 Difference]: With dead ends: 58 [2018-11-18 17:27:02,895 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:27:02,896 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:27:02,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:27:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 17:27:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 17:27:02,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-18 17:27:02,899 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-18 17:27:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:02,899 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-18 17:27:02,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 17:27:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-18 17:27:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 17:27:02,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:02,900 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] [2018-11-18 17:27:02,900 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:02,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash -907350383, now seen corresponding path program 1 times [2018-11-18 17:27:02,900 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:02,901 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:02,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:02,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:27:02,985 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:02,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:02,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 17:27:02,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:27:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:27:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:27:02,992 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states. [2018-11-18 17:27:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:03,051 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-18 17:27:03,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:27:03,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-18 17:27:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:03,052 INFO L225 Difference]: With dead ends: 51 [2018-11-18 17:27:03,053 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:27:03,053 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:27:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:27:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 17:27:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 17:27:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-11-18 17:27:03,057 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2018-11-18 17:27:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:03,057 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-11-18 17:27:03,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:27:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-11-18 17:27:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 17:27:03,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:03,058 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] [2018-11-18 17:27:03,058 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:03,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:03,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1716697009, now seen corresponding path program 1 times [2018-11-18 17:27:03,058 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:03,058 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:03,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:27:03,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:27:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 17:27:03,155 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:27:03,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:27:03,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 17:27:03,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 17:27:03,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 17:27:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:27:03,163 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2018-11-18 17:27:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:27:03,303 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-18 17:27:03,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:27:03,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-18 17:27:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:27:03,304 INFO L225 Difference]: With dead ends: 38 [2018-11-18 17:27:03,304 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:27:03,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:27:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:27:03,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 17:27:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 17:27:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-18 17:27:03,308 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-18 17:27:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:27:03,308 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-18 17:27:03,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 17:27:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-18 17:27:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 17:27:03,309 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:27:03,309 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:27:03,309 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:27:03,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:27:03,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1627131194, now seen corresponding path program 1 times [2018-11-18 17:27:03,309 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 17:27:03,309 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 17:27:03,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:27:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:27:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:27:03,450 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:27:03,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:27:03 BoogieIcfgContainer [2018-11-18 17:27:03,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:27:03,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:27:03,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:27:03,482 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:27:03,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:27:01" (3/4) ... [2018-11-18 17:27:03,484 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:27:03,533 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_661e5473-efdc-43ac-9a9f-a8eb7613207e/bin-2019/utaipan/witness.graphml [2018-11-18 17:27:03,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:27:03,534 INFO L168 Benchmark]: Toolchain (without parser) took 2516.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 949.7 MB in the beginning and 872.6 MB in the end (delta: 77.2 MB). Peak memory consumption was 196.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:27:03,535 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:27:03,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 932.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:27:03,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.47 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:27:03,536 INFO L168 Benchmark]: Boogie Preprocessor took 27.87 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:27:03,536 INFO L168 Benchmark]: RCFGBuilder took 273.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -155.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:27:03,537 INFO L168 Benchmark]: TraceAbstraction took 1954.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 879.6 MB in the end (delta: 208.2 MB). Peak memory consumption was 208.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:27:03,537 INFO L168 Benchmark]: Witness Printer took 52.22 ms. Allocated memory is still 1.1 GB. Free memory was 879.6 MB in the beginning and 872.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:27:03,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 932.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.47 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.87 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 273.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -155.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1954.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 879.6 MB in the end (delta: 208.2 MB). Peak memory consumption was 208.2 MB. Max. memory is 11.5 GB. * Witness Printer took 52.22 ms. Allocated memory is still 1.1 GB. Free memory was 879.6 MB in the beginning and 872.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0.0, y=0.0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L44] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L44] COND FALSE !(__fpclassify_float(x) == 0) [L48] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L21] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L24] FCALL ieee_float_shape_type gf_u; [L25] FCALL gf_u.value = (x) [L26] EXPR, FCALL gf_u.word [L26] (w) = gf_u.word [L27] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L48] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] COND FALSE, EXPR !(x > y ? x : y) VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L51] RET return x > y ? x : y; [L75] EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0.0, x=0.0, y=0.0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L55] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L58] FCALL ieee_float_shape_type gf_u; [L59] FCALL gf_u.value = (x) [L60] EXPR, FCALL gf_u.word [L60] (w) = gf_u.word [L61] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L63] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L78] EXPR __signbit_float(res) VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=1, x=0.0, y=0.0] [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 272 SDtfs, 111 SDslu, 739 SDs, 0 SdLazy, 268 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 184 ConstructedInterpolants, 12 QuantifiedInterpolants, 13625 SizeOfPredicates, 15 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...