./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ......................................................................................................................................................................................................................................................................................................................................................... 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_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:12:00,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:12:00,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:12:00,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:12:00,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:12:00,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:12:00,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:12:00,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:12:00,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:12:00,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:12:00,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:12:00,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:12:00,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:12:00,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:12:00,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:12:00,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:12:00,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:12:00,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:12:00,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:12:00,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:12:00,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:12:00,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:12:00,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:12:00,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:12:00,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:12:00,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:12:00,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:12:00,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:12:00,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:12:00,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:12:00,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:12:00,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:12:00,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:12:00,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:12:00,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:12:00,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:12:00,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:12:00,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:12:00,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:12:00,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:12:00,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:12:00,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:12:00,398 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:12:00,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:12:00,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:12:00,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:12:00,400 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:12:00,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:12:00,400 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:12:00,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:12:00,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:12:00,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:12:00,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:12:00,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:12:00,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:12:00,402 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:12:00,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:12:00,402 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:12:00,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:12:00,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:12:00,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:12:00,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:12:00,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:12:00,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:12:00,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:12:00,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:12:00,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:12:00,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:12:00,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:12:00,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:12:00,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer 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 -> Automizer 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-20 04:12:00,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:12:00,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:12:00,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:12:00,562 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:12:00,563 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:12:00,572 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-20 04:12:00,625 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/23b715a5b/030e40f6fa1a4a0e958376b68e67925b/FLAG8908f14f6 [2019-11-20 04:12:01,053 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:12:01,054 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-20 04:12:01,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/23b715a5b/030e40f6fa1a4a0e958376b68e67925b/FLAG8908f14f6 [2019-11-20 04:12:01,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/23b715a5b/030e40f6fa1a4a0e958376b68e67925b [2019-11-20 04:12:01,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:12:01,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:12:01,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:12:01,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:12:01,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:12:01,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed8d722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01, skipping insertion in model container [2019-11-20 04:12:01,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:12:01,119 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:12:01,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:12:01,361 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:12:01,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:12:01,421 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:12:01,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01 WrapperNode [2019-11-20 04:12:01,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:12:01,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:12:01,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:12:01,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:12:01,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:12:01,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:12:01,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:12:01,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:12:01,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... [2019-11-20 04:12:01,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:12:01,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:12:01,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:12:01,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:12:01,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:12:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-20 04:12:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:12:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:12:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 04:12:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:12:01,904 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:12:01,905 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 04:12:01,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:01 BoogieIcfgContainer [2019-11-20 04:12:01,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:12:01,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:12:01,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:12:01,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:12:01,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:12:01" (1/3) ... [2019-11-20 04:12:01,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457ed51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:12:01, skipping insertion in model container [2019-11-20 04:12:01,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:01" (2/3) ... [2019-11-20 04:12:01,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457ed51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:12:01, skipping insertion in model container [2019-11-20 04:12:01,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:01" (3/3) ... [2019-11-20 04:12:01,913 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-20 04:12:01,922 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:12:01,929 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:12:01,936 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:12:01,954 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:12:01,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:12:01,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:12:01,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:12:01,955 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:12:01,955 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:12:01,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:12:01,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:12:01,968 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 04:12:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 04:12:01,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:01,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:01,975 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 04:12:01,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:12:01,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854919245] [2019-11-20 04:12:01,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:12:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:02,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854919245] [2019-11-20 04:12:02,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:02,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:12:02,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607986815] [2019-11-20 04:12:02,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:12:02,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:12:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:12:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:12:02,096 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 04:12:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:02,111 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 04:12:02,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:12:02,112 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 04:12:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:02,121 INFO L225 Difference]: With dead ends: 62 [2019-11-20 04:12:02,121 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 04:12:02,124 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 [2019-11-20 04:12:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 04:12:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 04:12:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 04:12:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 04:12:02,153 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 04:12:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:02,153 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 04:12:02,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:12:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 04:12:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 04:12:02,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:02,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:02,154 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:02,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 04:12:02,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:12:02,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629833606] [2019-11-20 04:12:02,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:12:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:02,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629833606] [2019-11-20 04:12:02,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:02,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:12:02,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850755741] [2019-11-20 04:12:02,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:12:02,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:12:02,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:12:02,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:12:02,231 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-20 04:12:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:02,325 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-20 04:12:02,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:12:02,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 04:12:02,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:02,329 INFO L225 Difference]: With dead ends: 53 [2019-11-20 04:12:02,329 INFO L226 Difference]: Without dead ends: 44 [2019-11-20 04:12:02,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:12:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-20 04:12:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-20 04:12:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 04:12:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 04:12:02,335 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 04:12:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:02,335 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 04:12:02,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:12:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 04:12:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 04:12:02,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:02,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:02,336 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-20 04:12:02,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:12:02,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381435083] [2019-11-20 04:12:02,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:12:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:02,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381435083] [2019-11-20 04:12:02,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:02,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 04:12:02,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081365057] [2019-11-20 04:12:02,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:12:02,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:12:02,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:12:02,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:12:02,412 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 04:12:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:02,465 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-20 04:12:02,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:12:02,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 04:12:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:02,466 INFO L225 Difference]: With dead ends: 55 [2019-11-20 04:12:02,467 INFO L226 Difference]: Without dead ends: 46 [2019-11-20 04:12:02,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:12:02,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-20 04:12:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-20 04:12:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 04:12:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 04:12:02,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-20 04:12:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:02,473 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 04:12:02,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:12:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 04:12:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 04:12:02,475 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:02,475 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:02,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 04:12:02,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:12:02,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819073747] [2019-11-20 04:12:02,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:12:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:12:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:12:02,545 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:12:02,545 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:12:02,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:12:02 BoogieIcfgContainer [2019-11-20 04:12:02,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:12:02,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:12:02,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:12:02,571 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:12:02,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:01" (3/4) ... [2019-11-20 04:12:02,574 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:12:02,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:12:02,577 INFO L168 Benchmark]: Toolchain (without parser) took 1494.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -124.6 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:02,577 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:12:02,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -199.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:02,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:12:02,578 INFO L168 Benchmark]: Boogie Preprocessor took 32.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:12:02,579 INFO L168 Benchmark]: RCFGBuilder took 407.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:02,579 INFO L168 Benchmark]: TraceAbstraction took 663.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:02,580 INFO L168 Benchmark]: Witness Printer took 4.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:12:02,583 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -199.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 407.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 663.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * Witness Printer took 4.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.24-678e011 [2019-11-20 04:12:04,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:12:04,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:12:04,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:12:04,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:12:04,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:12:04,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:12:04,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:12:04,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:12:04,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:12:04,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:12:04,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:12:04,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:12:04,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:12:04,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:12:04,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:12:04,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:12:04,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:12:04,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:12:04,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:12:04,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:12:04,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:12:04,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:12:04,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:12:04,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:12:04,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:12:04,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:12:04,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:12:04,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:12:04,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:12:04,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:12:04,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:12:04,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:12:04,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:12:04,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:12:04,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:12:04,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:12:04,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:12:04,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:12:04,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:12:04,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:12:04,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 04:12:04,549 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:12:04,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:12:04,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:12:04,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:12:04,553 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:12:04,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:12:04,554 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:12:04,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:12:04,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:12:04,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:12:04,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:12:04,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:12:04,556 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:12:04,556 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:12:04,557 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:12:04,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:12:04,557 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:12:04,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:12:04,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:12:04,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:12:04,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:12:04,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:12:04,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:12:04,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:12:04,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:12:04,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:12:04,560 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:12:04,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:12:04,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:12:04,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:12:04,561 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_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer 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 -> Automizer 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2019-11-20 04:12:04,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:12:04,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:12:04,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:12:04,833 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:12:04,834 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:12:04,834 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-20 04:12:04,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/2059e55e0/95c314ebc9624742918447300a13806c/FLAGb79b8ab04 [2019-11-20 04:12:05,274 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:12:05,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2019-11-20 04:12:05,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/2059e55e0/95c314ebc9624742918447300a13806c/FLAGb79b8ab04 [2019-11-20 04:12:05,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/data/2059e55e0/95c314ebc9624742918447300a13806c [2019-11-20 04:12:05,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:12:05,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:12:05,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:12:05,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:12:05,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:12:05,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:12:05" (1/1) ... [2019-11-20 04:12:05,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f5958f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:05, skipping insertion in model container [2019-11-20 04:12:05,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:12:05" (1/1) ... [2019-11-20 04:12:05,730 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:12:05,747 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:12:05,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:12:05,971 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:12:06,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:12:06,042 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:12:06,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06 WrapperNode [2019-11-20 04:12:06,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:12:06,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:12:06,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:12:06,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:12:06,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:12:06,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:12:06,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:12:06,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:12:06,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... [2019-11-20 04:12:06,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:12:06,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:12:06,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:12:06,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:12:06,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 04:12:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 04:12:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:12:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:12:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-20 04:12:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:12:06,616 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:12:06,616 INFO L285 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-20 04:12:06,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:06 BoogieIcfgContainer [2019-11-20 04:12:06,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:12:06,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:12:06,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:12:06,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:12:06,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:12:05" (1/3) ... [2019-11-20 04:12:06,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d9df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:12:06, skipping insertion in model container [2019-11-20 04:12:06,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:12:06" (2/3) ... [2019-11-20 04:12:06,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d9df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:12:06, skipping insertion in model container [2019-11-20 04:12:06,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:06" (3/3) ... [2019-11-20 04:12:06,624 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2019-11-20 04:12:06,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:12:06,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:12:06,648 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:12:06,669 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:12:06,670 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:12:06,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:12:06,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:12:06,670 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:12:06,670 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:12:06,671 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:12:06,671 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:12:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-20 04:12:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 04:12:06,690 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:06,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:06,691 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:06,696 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-20 04:12:06,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:06,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560504199] [2019-11-20 04:12:06,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:06,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 04:12:06,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:06,786 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:06,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560504199] [2019-11-20 04:12:06,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:06,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 04:12:06,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482314712] [2019-11-20 04:12:06,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:12:06,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:06,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:12:06,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:12:06,811 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-20 04:12:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:06,829 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-20 04:12:06,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:12:06,830 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 04:12:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:06,840 INFO L225 Difference]: With dead ends: 62 [2019-11-20 04:12:06,840 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 04:12:06,842 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 [2019-11-20 04:12:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 04:12:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-20 04:12:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-20 04:12:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-20 04:12:06,878 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-20 04:12:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:06,879 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-20 04:12:06,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:12:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-20 04:12:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 04:12:06,879 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:06,880 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:07,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 04:12:07,080 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:07,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-20 04:12:07,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:07,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157534276] [2019-11-20 04:12:07,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:07,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:12:07,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:07,203 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:07,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157534276] [2019-11-20 04:12:07,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:07,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 04:12:07,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384838715] [2019-11-20 04:12:07,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:12:07,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:12:07,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:12:07,234 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-20 04:12:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:07,369 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-20 04:12:07,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:12:07,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-20 04:12:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:07,373 INFO L225 Difference]: With dead ends: 68 [2019-11-20 04:12:07,373 INFO L226 Difference]: Without dead ends: 59 [2019-11-20 04:12:07,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:12:07,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-20 04:12:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-20 04:12:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 04:12:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-20 04:12:07,385 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-20 04:12:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:07,386 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-20 04:12:07,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:12:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-20 04:12:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 04:12:07,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:07,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:07,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 04:12:07,605 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:07,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:07,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-20 04:12:07,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:07,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548833028] [2019-11-20 04:12:07,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:07,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:12:07,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:07,703 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:07,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548833028] [2019-11-20 04:12:07,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:07,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 04:12:07,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916035788] [2019-11-20 04:12:07,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:12:07,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:07,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:12:07,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:12:07,746 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-20 04:12:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:07,824 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-20 04:12:07,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:12:07,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 04:12:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:07,826 INFO L225 Difference]: With dead ends: 52 [2019-11-20 04:12:07,826 INFO L226 Difference]: Without dead ends: 26 [2019-11-20 04:12:07,826 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:12:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-20 04:12:07,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-20 04:12:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-20 04:12:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-20 04:12:07,831 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-20 04:12:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:07,831 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-20 04:12:07,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:12:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-20 04:12:07,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 04:12:07,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:07,832 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:08,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 04:12:08,043 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-20 04:12:08,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:08,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141973894] [2019-11-20 04:12:08,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:08,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:12:08,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,134 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141973894] [2019-11-20 04:12:08,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:08,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-20 04:12:08,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602970599] [2019-11-20 04:12:08,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 04:12:08,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:08,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:12:08,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:12:08,153 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-20 04:12:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:08,246 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-20 04:12:08,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:12:08,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 04:12:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:08,248 INFO L225 Difference]: With dead ends: 61 [2019-11-20 04:12:08,248 INFO L226 Difference]: Without dead ends: 52 [2019-11-20 04:12:08,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:12:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-20 04:12:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-20 04:12:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 04:12:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-20 04:12:08,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-20 04:12:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:08,255 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-20 04:12:08,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 04:12:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-20 04:12:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 04:12:08,256 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:08,256 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:08,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-20 04:12:08,457 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:08,457 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-20 04:12:08,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:08,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779938227] [2019-11-20 04:12:08,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/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 [2019-11-20 04:12:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:08,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:12:08,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779938227] [2019-11-20 04:12:08,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:08,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-20 04:12:08,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596615900] [2019-11-20 04:12:08,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:12:08,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:08,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:12:08,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:12:08,588 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-20 04:12:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:08,604 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-20 04:12:08,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:12:08,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-20 04:12:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:08,607 INFO L225 Difference]: With dead ends: 38 [2019-11-20 04:12:08,607 INFO L226 Difference]: Without dead ends: 28 [2019-11-20 04:12:08,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:12:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-20 04:12:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-20 04:12:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 04:12:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-20 04:12:08,614 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-20 04:12:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:08,617 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 04:12:08,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:12:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-20 04:12:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 04:12:08,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:08,620 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:08,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-20 04:12:08,821 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-20 04:12:08,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:08,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185301140] [2019-11-20 04:12:08,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-20 04:12:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:08,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:12:08,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,931 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:08,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:12:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:08,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185301140] [2019-11-20 04:12:08,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:08,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-20 04:12:08,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460964671] [2019-11-20 04:12:08,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 04:12:08,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:08,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 04:12:08,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:12:08,991 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-20 04:12:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:09,099 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-20 04:12:09,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:12:09,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-20 04:12:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:09,100 INFO L225 Difference]: With dead ends: 40 [2019-11-20 04:12:09,100 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 04:12:09,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-20 04:12:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 04:12:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-20 04:12:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 04:12:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 04:12:09,105 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-20 04:12:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:09,106 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 04:12:09,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 04:12:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 04:12:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 04:12:09,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:09,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:09,318 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-20 04:12:09,318 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-20 04:12:09,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:09,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964931733] [2019-11-20 04:12:09,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-20 04:12:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:09,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:12:09,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:09,423 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:09,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964931733] [2019-11-20 04:12:09,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:09,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 04:12:09,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304407081] [2019-11-20 04:12:09,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:12:09,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:09,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:12:09,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:12:09,450 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-20 04:12:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:09,511 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-20 04:12:09,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:12:09,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-20 04:12:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:09,513 INFO L225 Difference]: With dead ends: 43 [2019-11-20 04:12:09,513 INFO L226 Difference]: Without dead ends: 23 [2019-11-20 04:12:09,514 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:12:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-20 04:12:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-20 04:12:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 04:12:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-20 04:12:09,517 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-20 04:12:09,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:09,518 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-20 04:12:09,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:12:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-20 04:12:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 04:12:09,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:12:09,519 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:12:09,737 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-20 04:12:09,738 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:12:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:12:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-20 04:12:09,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:12:09,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143720581] [2019-11-20 04:12:09,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-20 04:12:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:12:09,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 04:12:09,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:12:09,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:12:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:09,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:12:09,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 04:12:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:12:10,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143720581] [2019-11-20 04:12:10,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:12:10,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2019-11-20 04:12:10,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406345428] [2019-11-20 04:12:10,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 04:12:10,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:12:10,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 04:12:10,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-11-20 04:12:10,185 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2019-11-20 04:12:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:12:10,407 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-20 04:12:10,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 04:12:10,408 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2019-11-20 04:12:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:12:10,409 INFO L225 Difference]: With dead ends: 23 [2019-11-20 04:12:10,409 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:12:10,410 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2019-11-20 04:12:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:12:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:12:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:12:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:12:10,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-20 04:12:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:12:10,410 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:12:10,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 04:12:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:12:10,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:12:10,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-20 04:12:10,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:12:10,888 INFO L444 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2019-11-20 04:12:10,888 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 37) no Hoare annotation was computed. [2019-11-20 04:12:10,888 INFO L444 ceAbstractionStarter]: For program point L69-2(lines 69 72) no Hoare annotation was computed. [2019-11-20 04:12:10,888 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:12:10,888 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L440 ceAbstractionStarter]: At program point L53(lines 44 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (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)) .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-20 04:12:10,889 INFO L444 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L444 ceAbstractionStarter]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L444 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2019-11-20 04:12:10,889 INFO L440 ceAbstractionStarter]: At program point L47-2(lines 47 51) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_main_~res~0 .cse0) |ULTIMATE.start_main_#t~short9| (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start___signbit_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L23-1(lines 23 32) no Hoare annotation was computed. [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2019-11-20 04:12:10,890 INFO L440 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L15-3(lines 12 33) no Hoare annotation was computed. [2019-11-20 04:12:10,890 INFO L444 ceAbstractionStarter]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2019-11-20 04:12:10,891 INFO L440 ceAbstractionStarter]: At program point L15-6(lines 15 19) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-20 04:12:10,892 INFO L444 ceAbstractionStarter]: For program point L15-7(lines 12 33) no Hoare annotation was computed. [2019-11-20 04:12:10,892 INFO L440 ceAbstractionStarter]: At program point L32(lines 12 33) the Hoare annotation is: (and (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24)))) [2019-11-20 04:12:10,892 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-20 04:12:10,892 INFO L440 ceAbstractionStarter]: At program point L32-1(lines 12 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-20 04:12:10,893 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2019-11-20 04:12:10,893 INFO L447 ceAbstractionStarter]: At program point L74(lines 56 75) the Hoare annotation is: true [2019-11-20 04:12:10,893 INFO L444 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-11-20 04:12:10,893 INFO L444 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2019-11-20 04:12:10,893 INFO L440 ceAbstractionStarter]: At program point L41-3(lines 35 42) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= .cse0 ULTIMATE.start___fpclassify_float_~x) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2019-11-20 04:12:10,893 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:12:10,894 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-11-20 04:12:10,894 INFO L444 ceAbstractionStarter]: For program point L26-1(lines 26 32) no Hoare annotation was computed. [2019-11-20 04:12:10,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:12:10 BoogieIcfgContainer [2019-11-20 04:12:10,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:12:10,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:12:10,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:12:10,931 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:12:10,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:12:06" (3/4) ... [2019-11-20 04:12:10,934 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:12:10,944 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2019-11-20 04:12:10,944 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-20 04:12:10,944 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 04:12:10,966 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-20 04:12:10,966 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-20 04:12:10,967 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-20 04:12:10,967 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-20 04:12:10,968 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2019-11-20 04:12:11,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08cbfc8c-11a8-4adc-a34d-8b3d67720172/bin/uautomizer/witness.graphml [2019-11-20 04:12:11,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:12:11,011 INFO L168 Benchmark]: Toolchain (without parser) took 5293.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.1 MB in the beginning and 835.9 MB in the end (delta: 119.2 MB). Peak memory consumption was 255.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,011 INFO L168 Benchmark]: CDTParser took 0.25 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. [2019-11-20 04:12:11,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.28 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,015 INFO L168 Benchmark]: Boogie Preprocessor took 55.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:12:11,016 INFO L168 Benchmark]: RCFGBuilder took 406.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,016 INFO L168 Benchmark]: TraceAbstraction took 4312.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 842.5 MB in the end (delta: 259.8 MB). Peak memory consumption was 259.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,017 INFO L168 Benchmark]: Witness Printer took 77.85 ms. Allocated memory is still 1.2 GB. Free memory was 842.5 MB in the beginning and 835.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:12:11,019 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 325.28 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 111.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 406.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4312.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 842.5 MB in the end (delta: 259.8 MB). Peak memory consumption was 259.8 MB. Max. memory is 11.5 GB. * Witness Printer took 77.85 ms. Allocated memory is still 1.2 GB. Free memory was 842.5 MB in the beginning and 835.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 12]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && !(0bv32 == \result)) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == x) && 2bv32 == \result) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 234 SDtfs, 215 SDslu, 432 SDs, 0 SdLazy, 153 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...