./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.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_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 bc7b929d20445456da87d92c4566355380c50982 ................................................................................................................................................................................................................................................................................................................... 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_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 bc7b929d20445456da87d92c4566355380c50982 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:14:42,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:14:42,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:14:42,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:14:42,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:14:42,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:14:42,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:14:42,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:14:42,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:14:42,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:14:42,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:14:42,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:14:42,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:14:42,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:14:42,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:14:42,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:14:42,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:14:42,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:14:42,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:14:42,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:14:42,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:14:42,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:14:42,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:14:42,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:14:42,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:14:42,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:14:42,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:14:42,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:14:42,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:14:42,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:14:42,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:14:42,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:14:42,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:14:42,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:14:42,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:14:42,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:14:42,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:14:42,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:14:42,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:14:42,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:14:42,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:14:42,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:14:42,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:14:42,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:14:42,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:14:42,590 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:14:42,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:14:42,590 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:14:42,591 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:14:42,592 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:14:42,592 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:14:42,592 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:14:42,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:14:42,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:14:42,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:14:42,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:14:42,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:14:42,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:14:42,595 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:14:42,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:14:42,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:14:42,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:14:42,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:14:42,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:14:42,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:14:42,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:14:42,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:14:42,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:14:42,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:14:42,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:14:42,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:14:42,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:14:42,597 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_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 -> bc7b929d20445456da87d92c4566355380c50982 [2019-12-07 15:14:42,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:14:42,710 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:14:42,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:14:42,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:14:42,714 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:14:42,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2019-12-07 15:14:42,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/45dc6629b/97c91d209aa84ebda78cc9634002d9c0/FLAG3d8f8d0b1 [2019-12-07 15:14:43,177 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:14:43,178 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2019-12-07 15:14:43,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/45dc6629b/97c91d209aa84ebda78cc9634002d9c0/FLAG3d8f8d0b1 [2019-12-07 15:14:43,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/45dc6629b/97c91d209aa84ebda78cc9634002d9c0 [2019-12-07 15:14:43,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:14:43,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:14:43,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:14:43,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:14:43,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:14:43,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f50cffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43, skipping insertion in model container [2019-12-07 15:14:43,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:14:43,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:14:43,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:14:43,376 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:14:43,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:14:43,416 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:14:43,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43 WrapperNode [2019-12-07 15:14:43,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:14:43,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:14:43,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:14:43,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:14:43,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:14:43,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:14:43,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:14:43,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:14:43,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... [2019-12-07 15:14:43,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:14:43,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:14:43,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:14:43,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:14:43,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 15:14:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:14:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 15:14:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:14:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:14:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:14:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:14:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:14:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 15:14:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:14:43,807 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:14:43,807 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:14:43,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:43 BoogieIcfgContainer [2019-12-07 15:14:43,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:14:43,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:14:43,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:14:43,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:14:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:14:43" (1/3) ... [2019-12-07 15:14:43,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db26c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:14:43, skipping insertion in model container [2019-12-07 15:14:43,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:43" (2/3) ... [2019-12-07 15:14:43,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db26c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:14:43, skipping insertion in model container [2019-12-07 15:14:43,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:43" (3/3) ... [2019-12-07 15:14:43,813 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2019-12-07 15:14:43,820 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:14:43,824 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:14:43,832 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:14:43,848 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:14:43,848 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:14:43,848 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:14:43,848 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:14:43,848 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:14:43,848 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:14:43,848 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:14:43,848 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:14:43,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-12-07 15:14:43,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:14:43,863 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:14:43,864 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:14:43,864 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:14:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:14:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash -42699680, now seen corresponding path program 1 times [2019-12-07 15:14:43,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:14:43,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757629233] [2019-12-07 15:14:43,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:14:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:14:43,970 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 15:14:43,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757629233] [2019-12-07 15:14:43,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:14:43,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:14:43,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261124250] [2019-12-07 15:14:43,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:14:43,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:14:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:14:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:14:43,984 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-12-07 15:14:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:14:43,996 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2019-12-07 15:14:43,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:14:43,997 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-12-07 15:14:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:14:44,003 INFO L225 Difference]: With dead ends: 49 [2019-12-07 15:14:44,003 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:14:44,005 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 15:14:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:14:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 15:14:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 15:14:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-12-07 15:14:44,026 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2019-12-07 15:14:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:14:44,026 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-12-07 15:14:44,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:14:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-12-07 15:14:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:14:44,027 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:14:44,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:14:44,027 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:14:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:14:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -282315225, now seen corresponding path program 1 times [2019-12-07 15:14:44,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:14:44,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309073405] [2019-12-07 15:14:44,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:14:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:14:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:14:44,111 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:14:44,111 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:14:44,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:14:44 BoogieIcfgContainer [2019-12-07 15:14:44,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:14:44,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:14:44,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:14:44,136 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:14:44,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:43" (3/4) ... [2019-12-07 15:14:44,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:14:44,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:14:44,140 INFO L168 Benchmark]: Toolchain (without parser) took 946.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 946.2 MB in the beginning and 1.0 GB in the end (delta: -76.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:14:44,141 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:14:44,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:14:44,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.83 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 15:14:44,142 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 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 15:14:44,142 INFO L168 Benchmark]: RCFGBuilder took 334.85 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:14:44,143 INFO L168 Benchmark]: TraceAbstraction took 326.53 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:14:44,143 INFO L168 Benchmark]: Witness Printer took 3.14 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 15:14:44,145 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -154.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.83 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 24.27 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 334.85 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 326.53 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.14 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: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L137] float x = 0.0f; [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; VAL [aT_atan={3:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff VAL [aT_atan={3:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; VAL [aT_atan={3:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L138] float res = atan_float(x); [L141] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [aT_atan={3:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L141] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L142] __VERIFIER_error() VAL [aT_atan={3:0}, atanhi_atan={6:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 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=25occurred 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, 17 NumberOfCodeBlocks, 17 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 15:14:45,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:14:45,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:14:45,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:14:45,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:14:45,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:14:45,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:14:45,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:14:45,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:14:45,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:14:45,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:14:45,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:14:45,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:14:45,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:14:45,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:14:45,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:14:45,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:14:45,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:14:45,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:14:45,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:14:45,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:14:45,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:14:45,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:14:45,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:14:45,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:14:45,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:14:45,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:14:45,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:14:45,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:14:45,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:14:45,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:14:45,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:14:45,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:14:45,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:14:45,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:14:45,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:14:45,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:14:45,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:14:45,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:14:45,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:14:45,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:14:45,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 15:14:45,532 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:14:45,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:14:45,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:14:45,532 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:14:45,533 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:14:45,533 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:14:45,533 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:14:45,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:14:45,533 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:14:45,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:14:45,534 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:14:45,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:14:45,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:14:45,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 15:14:45,536 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:14:45,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:14:45,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:14:45,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:14:45,537 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_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 -> bc7b929d20445456da87d92c4566355380c50982 [2019-12-07 15:14:45,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:14:45,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:14:45,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:14:45,716 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:14:45,717 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:14:45,717 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2019-12-07 15:14:45,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/d16022b2f/dc05ddde97ff4359b7cc9f1b63311b16/FLAG3c071c6ea [2019-12-07 15:14:46,154 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:14:46,154 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/sv-benchmarks/c/float-newlib/float_req_bl_0620a.c [2019-12-07 15:14:46,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/d16022b2f/dc05ddde97ff4359b7cc9f1b63311b16/FLAG3c071c6ea [2019-12-07 15:14:46,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/data/d16022b2f/dc05ddde97ff4359b7cc9f1b63311b16 [2019-12-07 15:14:46,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:14:46,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:14:46,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:14:46,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:14:46,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:14:46,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bc42c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46, skipping insertion in model container [2019-12-07 15:14:46,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:14:46,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:14:46,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:14:46,721 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:14:46,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:14:46,805 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:14:46,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46 WrapperNode [2019-12-07 15:14:46,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:14:46,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:14:46,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:14:46,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:14:46,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:14:46,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:14:46,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:14:46,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:14:46,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... [2019-12-07 15:14:46,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:14:46,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:14:46,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:14:46,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:14:46,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 15:14:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-12-07 15:14:46,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:14:46,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 15:14:46,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:14:54,296 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:14:54,297 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:14:54,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:54 BoogieIcfgContainer [2019-12-07 15:14:54,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:14:54,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:14:54,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:14:54,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:14:54,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:14:46" (1/3) ... [2019-12-07 15:14:54,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c8f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:14:54, skipping insertion in model container [2019-12-07 15:14:54,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:14:46" (2/3) ... [2019-12-07 15:14:54,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c8f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:14:54, skipping insertion in model container [2019-12-07 15:14:54,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:54" (3/3) ... [2019-12-07 15:14:54,303 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a.c [2019-12-07 15:14:54,309 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:14:54,313 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:14:54,321 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:14:54,336 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:14:54,337 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:14:54,337 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:14:54,337 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:14:54,337 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:14:54,337 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:14:54,337 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:14:54,337 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:14:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 15:14:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:14:54,352 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:14:54,353 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:14:54,353 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:14:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:14:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2019-12-07 15:14:54,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:14:54,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555867379] [2019-12-07 15:14:54,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 15:14:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:14:55,183 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:14:55,187 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:14:55,198 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 15:14:55,198 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:14:55,201 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 15:14:55,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555867379] [2019-12-07 15:14:55,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:14:55,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:14:55,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694840624] [2019-12-07 15:14:55,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:14:55,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:14:55,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:14:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:14:55,217 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-12-07 15:14:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:14:55,232 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2019-12-07 15:14:55,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:14:55,233 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:14:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:14:55,241 INFO L225 Difference]: With dead ends: 72 [2019-12-07 15:14:55,241 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 15:14:55,244 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 15:14:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 15:14:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 15:14:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 15:14:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-12-07 15:14:55,268 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2019-12-07 15:14:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:14:55,268 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-12-07 15:14:55,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:14:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2019-12-07 15:14:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:14:55,269 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:14:55,269 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:14:55,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:14:55,470 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:14:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:14:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2019-12-07 15:14:55,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:14:55,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034119404] [2019-12-07 15:14:55,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 15:14:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:14:56,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:14:56,306 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:14:56,364 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 15:14:56,364 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:14:56,412 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 15:14:56,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034119404] [2019-12-07 15:14:56,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:14:56,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 15:14:56,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897435650] [2019-12-07 15:14:56,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:14:56,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:14:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:14:56,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:14:56,415 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 8 states. [2019-12-07 15:15:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:15:00,474 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-12-07 15:15:00,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:15:00,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-07 15:15:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:15:00,476 INFO L225 Difference]: With dead ends: 57 [2019-12-07 15:15:00,476 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 15:15:00,477 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:15:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 15:15:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2019-12-07 15:15:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 15:15:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 15:15:00,480 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2019-12-07 15:15:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:15:00,480 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 15:15:00,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:15:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 15:15:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 15:15:00,481 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:15:00,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:15:00,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:15:00,683 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:15:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:15:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2019-12-07 15:15:00,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:15:00,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570572158] [2019-12-07 15:15:00,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/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 15:15:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:15:01,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:15:01,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:15:01,575 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 15:15:01,575 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:15:01,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:15:01,598 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 15:15:01,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570572158] [2019-12-07 15:15:01,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:15:01,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-12-07 15:15:01,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43952574] [2019-12-07 15:15:01,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:15:01,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:15:01,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:15:01,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:15:01,599 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2019-12-07 15:15:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:15:05,075 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-12-07 15:15:05,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:15:05,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 15:15:05,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:15:05,076 INFO L225 Difference]: With dead ends: 35 [2019-12-07 15:15:05,077 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 15:15:05,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:15:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 15:15:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2019-12-07 15:15:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:15:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-12-07 15:15:05,081 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2019-12-07 15:15:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:15:05,081 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-12-07 15:15:05,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:15:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-12-07 15:15:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:15:05,082 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:15:05,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:15:05,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:15:05,283 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:15:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:15:05,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2019-12-07 15:15:05,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:15:05,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899300502] [2019-12-07 15:15:05,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 15:15:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:15:07,044 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:15:07,045 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:15:07,100 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 15:15:07,100 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:15:07,456 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-12-07 15:15:07,549 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 15:15:07,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899300502] [2019-12-07 15:15:07,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:15:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 15:15:07,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905201777] [2019-12-07 15:15:07,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:15:07,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:15:07,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:15:07,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:15:07,551 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2019-12-07 15:15:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:15:07,667 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-12-07 15:15:07,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:15:07,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 15:15:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:15:07,671 INFO L225 Difference]: With dead ends: 32 [2019-12-07 15:15:07,672 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:15:07,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:15:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:15:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:15:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:15:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-12-07 15:15:07,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2019-12-07 15:15:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:15:07,674 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-12-07 15:15:07,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:15:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-12-07 15:15:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:15:07,675 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:15:07,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:15:07,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:15:07,876 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:15:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:15:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2019-12-07 15:15:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:15:07,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140710946] [2019-12-07 15:15:07,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 15:15:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:15:08,697 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 15:15:08,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:15:08,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:15:08,757 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 15:15:08,757 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:15:08,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:15:08,884 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 15:15:08,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140710946] [2019-12-07 15:15:08,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:15:08,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2019-12-07 15:15:08,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112025822] [2019-12-07 15:15:08,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 15:15:08,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:15:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 15:15:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:15:08,885 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 14 states. [2019-12-07 15:15:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:15:09,073 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-12-07 15:15:09,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 15:15:09,073 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2019-12-07 15:15:09,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:15:09,074 INFO L225 Difference]: With dead ends: 18 [2019-12-07 15:15:09,074 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:15:09,074 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-12-07 15:15:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:15:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:15:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:15:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:15:09,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-12-07 15:15:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:15:09,075 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:15:09,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 15:15:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:15:09,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:15:09,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 15:15:09,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:15:09,443 INFO L242 CegarLoopResult]: At program point L126(lines 117 127) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) |ULTIMATE.start_main_#t~short29| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_atan~0) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point L120-1(lines 120 124) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L242 CegarLoopResult]: At program point L120-2(lines 120 124) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) |ULTIMATE.start_main_#t~short29| (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point L120-3(lines 120 124) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point L21-1(lines 14 27) no Hoare annotation was computed. [2019-12-07 15:15:09,443 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L79(lines 79 95) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L71(lines 71 96) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L63(lines 63 70) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L88(lines 88 94) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L88-2(lines 71 96) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L249 CegarLoopResult]: At program point L146(lines 129 147) the Hoare annotation is: true [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L80(lines 80 86) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L113-2(line 113) no Hoare annotation was computed. [2019-12-07 15:15:09,444 INFO L242 CegarLoopResult]: At program point L113-3(lines 53 115) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) |ULTIMATE.start_atan_float_#res|) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 15:15:09,444 INFO L246 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L72-2(lines 72 75) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L64(lines 64 65) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L73(lines 73 74) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L242 CegarLoopResult]: At program point L57-2(lines 57 61) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ULTIMATE.start_atan_float_~x (_ +zero 8 24)) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)) ~huge_atan~0) (= currentRoundingMode roundNearestTiesToEven)) [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2019-12-07 15:15:09,445 INFO L242 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: false [2019-12-07 15:15:09,445 INFO L246 CegarLoopResult]: For program point L66(lines 66 69) no Hoare annotation was computed. [2019-12-07 15:15:09,446 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:15:09,446 INFO L246 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2019-12-07 15:15:09,446 INFO L246 CegarLoopResult]: For program point L141-2(lines 141 144) no Hoare annotation was computed. [2019-12-07 15:15:09,446 INFO L242 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: false [2019-12-07 15:15:09,446 INFO L246 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2019-12-07 15:15:09,446 INFO L246 CegarLoopResult]: For program point L109(lines 109 114) no Hoare annotation was computed. [2019-12-07 15:15:09,454 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,455 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,456 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,457 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,458 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,459 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,459 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,460 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,460 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,460 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,460 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,460 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,460 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,461 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,461 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,462 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,462 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,463 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,463 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,464 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,464 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,464 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,464 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,464 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,464 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:15:09 BoogieIcfgContainer [2019-12-07 15:15:09,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:15:09,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:15:09,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:15:09,466 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:15:09,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:14:54" (3/4) ... [2019-12-07 15:15:09,469 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:15:09,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 15:15:09,477 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 15:15:09,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:15:09,495 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2019-12-07 15:15:09,496 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2019-12-07 15:15:09,497 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2019-12-07 15:15:09,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d5ab2ec2-1144-4417-85f9-5995b3e25b70/bin/utaipan/witness.graphml [2019-12-07 15:15:09,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:15:09,527 INFO L168 Benchmark]: Toolchain (without parser) took 22993.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 952.4 MB in the beginning and 843.2 MB in the end (delta: 109.2 MB). Peak memory consumption was 227.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,528 INFO L168 Benchmark]: CDTParser took 0.13 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 15:15:09,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.41 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,528 INFO L168 Benchmark]: Boogie Preprocessor took 30.25 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 15:15:09,529 INFO L168 Benchmark]: RCFGBuilder took 7426.16 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,529 INFO L168 Benchmark]: TraceAbstraction took 15167.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 849.9 MB in the end (delta: 212.1 MB). Peak memory consumption was 212.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,529 INFO L168 Benchmark]: Witness Printer took 60.03 ms. Allocated memory is still 1.1 GB. Free memory was 849.9 MB in the beginning and 843.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:15:09,531 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.41 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.25 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 7426.16 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15167.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 849.9 MB in the end (delta: 212.1 MB). Peak memory consumption was 212.1 MB. Max. memory is 11.5 GB. * Witness Printer took 60.03 ms. Allocated memory is still 1.1 GB. Free memory was 849.9 MB in the beginning and 843.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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 - 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 - 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 - 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: 142]: 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 120]: Loop Invariant [2019-12-07 15:15:09,536 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,536 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,537 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,538 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,538 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 57]: Loop Invariant [2019-12-07 15:15:09,539 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,539 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,540 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,540 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && x == ~Pluszero~LONGDOUBLE()) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant [2019-12-07 15:15:09,540 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,541 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 117]: Loop Invariant [2019-12-07 15:15:09,542 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,542 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-12-07 15:15:09,543 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == res) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == \result) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) == huge_atan) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 14.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 111 SDtfs, 161 SDslu, 202 SDs, 0 SdLazy, 85 SolverSat, 12 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 122 HoareAnnotationTreeSize, 7 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 8909 SizeOfPredicates, 28 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...