./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cd93119259b478e9ace2ae93fde799beac44478 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cd93119259b478e9ace2ae93fde799beac44478 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:38:08,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:38:08,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:38:08,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:38:08,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:38:08,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:38:08,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:38:08,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:38:08,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:38:08,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:38:08,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:38:08,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:38:08,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:38:08,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:38:08,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:38:08,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:38:08,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:38:08,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:38:08,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:38:08,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:38:08,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:38:08,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:38:08,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:38:08,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:38:08,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:38:08,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:38:08,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:38:08,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:38:08,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:38:08,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:38:08,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:38:08,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:38:08,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:38:08,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:38:08,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:38:08,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:38:08,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:38:08,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:38:08,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:38:08,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:38:08,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:38:08,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:38:08,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:38:08,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:38:08,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:38:08,616 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:38:08,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:38:08,617 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:38:08,618 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:38:08,618 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:38:08,618 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:38:08,618 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:38:08,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:38:08,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:38:08,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:38:08,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:38:08,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:38:08,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:38:08,620 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:38:08,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:38:08,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:38:08,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:38:08,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:38:08,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:38:08,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:38:08,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:38:08,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:38:08,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:38:08,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:38:08,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:38:08,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:38:08,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:38:08,623 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cd93119259b478e9ace2ae93fde799beac44478 [2019-12-07 20:38:08,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:38:08,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:38:08,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:38:08,733 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:38:08,734 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:38:08,734 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2019-12-07 20:38:08,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/f922e8ddd/45ae7ce395a54a14a6dfed66005ee598/FLAGbf80cbd12 [2019-12-07 20:38:09,108 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:38:09,108 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2019-12-07 20:38:09,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/f922e8ddd/45ae7ce395a54a14a6dfed66005ee598/FLAGbf80cbd12 [2019-12-07 20:38:09,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/f922e8ddd/45ae7ce395a54a14a6dfed66005ee598 [2019-12-07 20:38:09,125 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:38:09,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:38:09,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:38:09,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:38:09,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:38:09,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f891b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09, skipping insertion in model container [2019-12-07 20:38:09,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:38:09,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:38:09,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:38:09,336 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:38:09,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:38:09,380 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:38:09,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09 WrapperNode [2019-12-07 20:38:09,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:38:09,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:38:09,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:38:09,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:38:09,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:38:09,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:38:09,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:38:09,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:38:09,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... [2019-12-07 20:38:09,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:38:09,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:38:09,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:38:09,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:38:09,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:38:09,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 20:38:09,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:38:09,757 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:38:09,757 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-12-07 20:38:09,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:09 BoogieIcfgContainer [2019-12-07 20:38:09,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:38:09,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:38:09,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:38:09,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:38:09,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:38:09" (1/3) ... [2019-12-07 20:38:09,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2b4c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:38:09, skipping insertion in model container [2019-12-07 20:38:09,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:09" (2/3) ... [2019-12-07 20:38:09,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2b4c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:38:09, skipping insertion in model container [2019-12-07 20:38:09,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:09" (3/3) ... [2019-12-07 20:38:09,764 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2019-12-07 20:38:09,773 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:38:09,778 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:38:09,785 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:38:09,802 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:38:09,802 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:38:09,802 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:38:09,803 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:38:09,803 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:38:09,803 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:38:09,803 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:38:09,803 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:38:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 20:38:09,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:38:09,817 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:38:09,817 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:38:09,817 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:38:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:38:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1340338453, now seen corresponding path program 1 times [2019-12-07 20:38:09,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:38:09,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008122882] [2019-12-07 20:38:09,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:38:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:38:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:09,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008122882] [2019-12-07 20:38:09,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:38:09,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:38:09,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683477362] [2019-12-07 20:38:09,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:38:09,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:38:09,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:38:09,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:38:09,920 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-12-07 20:38:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:38:09,933 INFO L93 Difference]: Finished difference Result 67 states and 111 transitions. [2019-12-07 20:38:09,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:38:09,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 20:38:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:38:09,941 INFO L225 Difference]: With dead ends: 67 [2019-12-07 20:38:09,941 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 20:38:09,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:38:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 20:38:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 20:38:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 20:38:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2019-12-07 20:38:09,966 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 8 [2019-12-07 20:38:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:38:09,966 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2019-12-07 20:38:09,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:38:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2019-12-07 20:38:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:38:09,966 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:38:09,966 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:38:09,967 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:38:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:38:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 932105592, now seen corresponding path program 1 times [2019-12-07 20:38:09,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:38:09,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795257189] [2019-12-07 20:38:09,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:38:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:38:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:38:10,058 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:38:10,059 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:38:10,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:38:10 BoogieIcfgContainer [2019-12-07 20:38:10,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:38:10,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:38:10,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:38:10,081 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:38:10,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:09" (3/4) ... [2019-12-07 20:38:10,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 20:38:10,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:38:10,085 INFO L168 Benchmark]: Toolchain (without parser) took 958.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 942.3 MB in the beginning and 1.0 GB in the end (delta: -79.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:10,086 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:10,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -150.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:10,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:10,087 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:10,087 INFO L168 Benchmark]: RCFGBuilder took 324.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:10,088 INFO L168 Benchmark]: TraceAbstraction took 321.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:10,088 INFO L168 Benchmark]: Witness Printer took 3.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:10,091 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 942.3 MB in the beginning and 1.1 GB in the end (delta: -150.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 324.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 321.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.16 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L117] float x = 1.0f / 0.0f; [L118] float y = __VERIFIER_nondet_float(); [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L119] float res = fmod_float(x, y); [L108] return x != x; [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.25-f470102 [2019-12-07 20:38:11,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:38:11,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:38:11,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:38:11,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:38:11,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:38:11,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:38:11,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:38:11,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:38:11,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:38:11,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:38:11,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:38:11,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:38:11,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:38:11,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:38:11,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:38:11,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:38:11,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:38:11,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:38:11,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:38:11,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:38:11,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:38:11,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:38:11,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:38:11,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:38:11,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:38:11,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:38:11,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:38:11,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:38:11,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:38:11,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:38:11,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:38:11,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:38:11,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:38:11,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:38:11,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:38:11,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:38:11,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:38:11,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:38:11,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:38:11,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:38:11,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 20:38:11,515 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:38:11,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:38:11,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:38:11,516 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:38:11,516 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:38:11,517 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:38:11,517 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:38:11,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:38:11,517 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:38:11,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:38:11,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:38:11,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:38:11,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:38:11,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:38:11,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:38:11,521 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cd93119259b478e9ace2ae93fde799beac44478 [2019-12-07 20:38:11,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:38:11,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:38:11,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:38:11,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:38:11,709 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:38:11,709 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2019-12-07 20:38:11,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/0e46d73f2/0563877a313640e2b1dc55195dc0f0c9/FLAG52176329b [2019-12-07 20:38:12,170 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:38:12,171 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/sv-benchmarks/c/float-newlib/float_req_bl_1122a.c [2019-12-07 20:38:12,175 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/0e46d73f2/0563877a313640e2b1dc55195dc0f0c9/FLAG52176329b [2019-12-07 20:38:12,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/data/0e46d73f2/0563877a313640e2b1dc55195dc0f0c9 [2019-12-07 20:38:12,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:38:12,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:38:12,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:38:12,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:38:12,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:38:12,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afbba0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12, skipping insertion in model container [2019-12-07 20:38:12,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:38:12,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:38:12,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:38:12,693 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:38:12,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:38:12,769 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:38:12,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12 WrapperNode [2019-12-07 20:38:12,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:38:12,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:38:12,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:38:12,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:38:12,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:38:12,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:38:12,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:38:12,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:38:12,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... [2019-12-07 20:38:12,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:38:12,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:38:12,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:38:12,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:38:12,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:38:12,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 20:38:12,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 20:38:12,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:38:14,412 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:38:14,412 INFO L287 CfgBuilder]: Removed 20 assume(true) statements. [2019-12-07 20:38:14,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:14 BoogieIcfgContainer [2019-12-07 20:38:14,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:38:14,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:38:14,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:38:14,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:38:14,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:38:12" (1/3) ... [2019-12-07 20:38:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0aa2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:38:14, skipping insertion in model container [2019-12-07 20:38:14,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:38:12" (2/3) ... [2019-12-07 20:38:14,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0aa2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:38:14, skipping insertion in model container [2019-12-07 20:38:14,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:14" (3/3) ... [2019-12-07 20:38:14,417 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2019-12-07 20:38:14,423 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:38:14,428 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:38:14,435 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:38:14,449 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:38:14,449 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:38:14,449 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:38:14,449 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:38:14,449 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:38:14,449 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:38:14,450 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:38:14,450 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:38:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-12-07 20:38:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:38:14,462 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:38:14,463 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:38:14,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:38:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:38:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2019-12-07 20:38:14,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:38:14,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395769267] [2019-12-07 20:38:14,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/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 [2019-12-07 20:38:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:38:14,712 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 20:38:14,716 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:38:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:14,725 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:38:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:14,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395769267] [2019-12-07 20:38:14,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:38:14,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:38:14,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106077989] [2019-12-07 20:38:14,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:38:14,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:38:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:38:14,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:38:14,746 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-12-07 20:38:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:38:14,760 INFO L93 Difference]: Finished difference Result 82 states and 138 transitions. [2019-12-07 20:38:14,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:38:14,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 20:38:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:38:14,769 INFO L225 Difference]: With dead ends: 82 [2019-12-07 20:38:14,769 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 20:38:14,771 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:38:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 20:38:14,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-12-07 20:38:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 20:38:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2019-12-07 20:38:14,801 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2019-12-07 20:38:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:38:14,802 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2019-12-07 20:38:14,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:38:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2019-12-07 20:38:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 20:38:14,803 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:38:14,803 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:38:15,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:38:15,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:38:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:38:15,006 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2019-12-07 20:38:15,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:38:15,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38396334] [2019-12-07 20:38:15,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/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 [2019-12-07 20:38:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:38:15,289 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 20:38:15,290 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:38:16,436 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-12-07 20:38:16,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:38:17,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:17,530 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:38:20,916 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~y (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode c_ULTIMATE.start_fmod_float_~x ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2019-12-07 20:38:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:21,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38396334] [2019-12-07 20:38:21,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:38:21,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-12-07 20:38:21,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53775008] [2019-12-07 20:38:21,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 20:38:21,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:38:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 20:38:21,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2019-12-07 20:38:21,161 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2019-12-07 20:38:26,165 WARN L192 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2019-12-07 20:38:27,472 WARN L192 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2019-12-07 20:38:28,720 WARN L192 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2019-12-07 20:38:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:38:28,904 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2019-12-07 20:38:28,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:38:28,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2019-12-07 20:38:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:38:28,906 INFO L225 Difference]: With dead ends: 49 [2019-12-07 20:38:28,906 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 20:38:28,907 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=1, NotChecked=22, Total=182 [2019-12-07 20:38:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 20:38:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2019-12-07 20:38:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 20:38:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2019-12-07 20:38:28,912 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2019-12-07 20:38:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:38:28,912 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2019-12-07 20:38:28,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 20:38:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2019-12-07 20:38:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 20:38:28,913 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:38:28,913 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:38:29,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 20:38:29,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:38:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:38:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2019-12-07 20:38:29,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:38:29,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772911960] [2019-12-07 20:38:29,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/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 [2019-12-07 20:38:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:38:29,214 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 20:38:29,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:38:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:29,268 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:38:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:38:29,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772911960] [2019-12-07 20:38:29,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:38:29,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2019-12-07 20:38:29,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517211984] [2019-12-07 20:38:29,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 20:38:29,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:38:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 20:38:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:38:29,327 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 7 states. [2019-12-07 20:38:29,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:38:29,367 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2019-12-07 20:38:29,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:38:29,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 20:38:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:38:29,368 INFO L225 Difference]: With dead ends: 39 [2019-12-07 20:38:29,368 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:38:29,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:38:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:38:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:38:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:38:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:38:29,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 20:38:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:38:29,370 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:38:29,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 20:38:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:38:29,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:38:29,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 20:38:29,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 20:38:29,694 INFO L246 CegarLoopResult]: For program point L52-1(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,694 INFO L246 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-12-07 20:38:29,694 INFO L249 CegarLoopResult]: At program point L127(lines 110 128) the Hoare annotation is: true [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L86(lines 86 103) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L20-1(lines 20 24) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 24) the Hoare annotation is: (and (= (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24)) ULTIMATE.start_fmod_float_~x) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L70(lines 70 71) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L46(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L242 CegarLoopResult]: At program point L104(lines 17 105) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24)) ULTIMATE.start_fmod_float_~x) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-12-07 20:38:29,695 INFO L246 CegarLoopResult]: For program point L88-1(lines 88 92) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L242 CegarLoopResult]: At program point L88-2(lines 88 92) the Hoare annotation is: false [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L242 CegarLoopResult]: At program point L47-3(lines 47 48) the Hoare annotation is: false [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L242 CegarLoopResult]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L97-3(lines 97 101) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L122(lines 122 125) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2019-12-07 20:38:29,696 INFO L246 CegarLoopResult]: For program point L40-1(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L65-1(lines 65 74) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L65-3(lines 65 74) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L242 CegarLoopResult]: At program point L82-2(lines 82 85) the Hoare annotation is: false [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L82-3(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L246 CegarLoopResult]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2019-12-07 20:38:29,697 INFO L242 CegarLoopResult]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L25(lines 25 29) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L58-1(lines 58 63) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L25-1(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L25-2(lines 25 29) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L242 CegarLoopResult]: At program point L108(line 108) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) (= (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24)) ULTIMATE.start_fmod_float_~x) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L67(lines 67 73) no Hoare annotation was computed. [2019-12-07 20:38:29,698 INFO L246 CegarLoopResult]: For program point L34(lines 34 35) no Hoare annotation was computed. [2019-12-07 20:38:29,699 INFO L242 CegarLoopResult]: At program point L67-2(lines 65 74) the Hoare annotation is: false [2019-12-07 20:38:29,699 INFO L246 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2019-12-07 20:38:29,699 INFO L246 CegarLoopResult]: For program point L76-2(lines 17 105) no Hoare annotation was computed. [2019-12-07 20:38:29,707 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,710 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,712 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,713 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,714 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,715 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:38:29 BoogieIcfgContainer [2019-12-07 20:38:29,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:38:29,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:38:29,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:38:29,717 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:38:29,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:38:14" (3/4) ... [2019-12-07 20:38:29,720 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:38:29,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 20:38:29,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 20:38:29,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:38:29,761 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_58a6169d-4530-42f7-b390-7d25f2e5c1ac/bin/utaipan/witness.graphml [2019-12-07 20:38:29,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:38:29,762 INFO L168 Benchmark]: Toolchain (without parser) took 17220.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.4 MB in the beginning and 960.6 MB in the end (delta: -8.2 MB). Peak memory consumption was 121.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:29,762 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:29,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:29,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:29,763 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:38:29,763 INFO L168 Benchmark]: RCFGBuilder took 1578.01 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:29,764 INFO L168 Benchmark]: TraceAbstraction took 15303.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.1 MB in the end (delta: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:29,764 INFO L168 Benchmark]: Witness Printer took 44.19 ms. Allocated memory is still 1.2 GB. Free memory was 967.1 MB in the beginning and 960.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:38:29,766 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 227.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.93 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. * RCFGBuilder took 1578.01 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15303.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 967.1 MB in the end (delta: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.19 ms. Allocated memory is still 1.2 GB. Free memory was 967.1 MB in the beginning and 960.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 110]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 88]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 108]: Loop Invariant [2019-12-07 20:38:29,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,770 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,771 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0), ~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant [2019-12-07 20:38:29,771 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,771 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,772 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,772 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 17]: Loop Invariant [2019-12-07 20:38:29,772 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,773 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 20:38:29,773 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (!~fp.eq~FLOAT(\result, \result) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0), ~Pluszero~LONGDOUBLE()) == x) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 15.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 109 SDtfs, 112 SDslu, 194 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 12.6s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 54 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 14 QuantifiedInterpolants, 4813 SizeOfPredicates, 19 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...