./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 31da98a788dd1938c78053bade42bc512d4e8954 ......................................................................................................................................................................................................................................................................................................................................................... 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_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 31da98a788dd1938c78053bade42bc512d4e8954 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:24,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:24,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:24,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:24,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:24,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:24,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:24,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:24,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:24,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:24,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:24,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:24,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:24,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:24,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:24,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:24,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:24,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:24,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:24,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:24,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:24,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:24,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:24,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:24,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:24,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:24,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:24,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:24,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:24,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:24,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:24,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:24,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:24,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:24,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:24,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:24,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:24,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:24,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:24,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:24,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:24,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:24,605 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:24,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:24,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:24,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:24,606 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:24,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:24,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:24,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:24,608 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:24,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:24,608 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:24,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:24,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:24,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:24,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:24,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:24,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:24,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:24,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:24,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:24,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:24,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:24,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:24,611 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_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-25 08:46:24,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:24,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:24,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:24,793 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:24,793 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:24,795 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-25 08:46:24,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5fec6527b/17e2a2db85994257972fcb09224ed859/FLAG603d7f68c [2019-11-25 08:46:25,239 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:25,240 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-25 08:46:25,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5fec6527b/17e2a2db85994257972fcb09224ed859/FLAG603d7f68c [2019-11-25 08:46:25,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5fec6527b/17e2a2db85994257972fcb09224ed859 [2019-11-25 08:46:25,667 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:25,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:25,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:25,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:25,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:25,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:25" (1/1) ... [2019-11-25 08:46:25,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dec846e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:25, skipping insertion in model container [2019-11-25 08:46:25,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:25" (1/1) ... [2019-11-25 08:46:25,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:25,697 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:25,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:25,955 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:25,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:26,009 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:26,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26 WrapperNode [2019-11-25 08:46:26,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:26,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:26,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:26,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:26,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:26,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:26,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:26,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:26,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... [2019-11-25 08:46:26,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:26,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:26,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:26,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:26,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:46:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:26,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:46:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:46:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:26,572 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:26,572 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-25 08:46:26,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:26 BoogieIcfgContainer [2019-11-25 08:46:26,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:26,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:26,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:26,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:25" (1/3) ... [2019-11-25 08:46:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287cab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:26, skipping insertion in model container [2019-11-25 08:46:26,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:26" (2/3) ... [2019-11-25 08:46:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287cab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:26, skipping insertion in model container [2019-11-25 08:46:26,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:26" (3/3) ... [2019-11-25 08:46:26,581 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-25 08:46:26,588 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:26,595 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:26,604 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:26,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:26,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:26,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:26,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:26,632 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:26,632 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:26,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:26,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-25 08:46:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:46:26,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,649 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:26,650 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,654 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-25 08:46:26,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:26,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157462510] [2019-11-25 08:46:26,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:26,755 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157462510] [2019-11-25 08:46:26,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:26,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:26,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503392212] [2019-11-25 08:46:26,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:26,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:26,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:26,775 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-25 08:46:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:26,789 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-25 08:46:26,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:26,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:46:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:26,798 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:46:26,798 INFO L226 Difference]: Without dead ends: 25 [2019-11-25 08:46:26,800 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 [2019-11-25 08:46:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-25 08:46:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-25 08:46:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:46:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-25 08:46:26,827 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-25 08:46:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:26,827 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-25 08:46:26,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-25 08:46:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:46:26,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,828 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:26,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-25 08:46:26,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:26,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605891541] [2019-11-25 08:46:26,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:26,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605891541] [2019-11-25 08:46:26,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:26,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:46:26,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293126170] [2019-11-25 08:46:26,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:46:26,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:26,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:26,912 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-25 08:46:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:26,981 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-25 08:46:26,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:26,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:46:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:26,984 INFO L225 Difference]: With dead ends: 41 [2019-11-25 08:46:26,984 INFO L226 Difference]: Without dead ends: 36 [2019-11-25 08:46:26,985 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 [2019-11-25 08:46:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-25 08:46:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-25 08:46:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:46:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-25 08:46:26,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-25 08:46:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:26,992 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-25 08:46:26,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:46:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-25 08:46:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:46:26,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,993 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:26,993 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-25 08:46:26,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:26,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841586356] [2019-11-25 08:46:26,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:27,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841586356] [2019-11-25 08:46:27,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:27,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:46:27,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112266289] [2019-11-25 08:46:27,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:46:27,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:27,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:27,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:27,074 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-25 08:46:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:27,132 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-25 08:46:27,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:27,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-25 08:46:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:27,134 INFO L225 Difference]: With dead ends: 43 [2019-11-25 08:46:27,134 INFO L226 Difference]: Without dead ends: 38 [2019-11-25 08:46:27,135 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 [2019-11-25 08:46:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-25 08:46:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-25 08:46:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:46:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-25 08:46:27,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-25 08:46:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:27,140 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-25 08:46:27,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:46:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-25 08:46:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:46:27,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:27,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:27,142 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:27,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-25 08:46:27,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:27,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320583504] [2019-11-25 08:46:27,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:27,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:27,204 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:27,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:27 BoogieIcfgContainer [2019-11-25 08:46:27,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:27,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:27,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:27,230 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:27,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:26" (3/4) ... [2019-11-25 08:46:27,233 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:27,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:27,235 INFO L168 Benchmark]: Toolchain (without parser) took 1566.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:27,236 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:27,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -218.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:27,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:27,238 INFO L168 Benchmark]: Boogie Preprocessor took 30.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:27,238 INFO L168 Benchmark]: RCFGBuilder took 497.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:27,239 INFO L168 Benchmark]: TraceAbstraction took 654.76 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:27,239 INFO L168 Benchmark]: Witness Printer took 4.27 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. [2019-11-25 08:46:27,242 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -218.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 497.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 654.76 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.27 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: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 54. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] float res = fmin_float(x, y); [L44] return x != x; [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 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=28occurred 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, 20 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 0.1.24-6b5699a [2019-11-25 08:46:29,051 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-25 08:46:29,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:29,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:29,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:29,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:29,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:29,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:29,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:29,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:29,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:29,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:29,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:29,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:29,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:29,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:29,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:29,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:29,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:29,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:29,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:29,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:29,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:29,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:29,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:29,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:29,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:29,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:29,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:29,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:29,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:29,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:46:29,127 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:29,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:29,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:29,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:29,130 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:29,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:29,130 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:29,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:29,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:29,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:29,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:29,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:29,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:46:29,133 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:46:29,133 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:46:29,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:29,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:29,134 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:29,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:29,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:29,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:29,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:29,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:29,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:29,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:29,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:29,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:29,136 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:46:29,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:46:29,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:29,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:46:29,137 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_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 -> 31da98a788dd1938c78053bade42bc512d4e8954 [2019-11-25 08:46:29,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:29,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:29,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:29,420 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:29,420 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:29,421 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-25 08:46:29,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5a5b702b6/dc0608381fac412f848f9476f04198be/FLAG2e28bc6ca [2019-11-25 08:46:29,834 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:29,835 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2019-11-25 08:46:29,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5a5b702b6/dc0608381fac412f848f9476f04198be/FLAG2e28bc6ca [2019-11-25 08:46:30,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/data/5a5b702b6/dc0608381fac412f848f9476f04198be [2019-11-25 08:46:30,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:30,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:30,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:30,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:30,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:30,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed0a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30, skipping insertion in model container [2019-11-25 08:46:30,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:30,242 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:30,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:30,440 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:30,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:30,496 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:30,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30 WrapperNode [2019-11-25 08:46:30,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:30,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:30,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:30,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:30,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:30,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:30,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:30,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:30,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... [2019-11-25 08:46:30,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:30,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:30,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:30,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:30,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:46:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:46:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-25 08:46:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:31,055 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:31,055 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-25 08:46:31,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:31 BoogieIcfgContainer [2019-11-25 08:46:31,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:31,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:31,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:31,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:31,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:30" (1/3) ... [2019-11-25 08:46:31,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e020b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:31, skipping insertion in model container [2019-11-25 08:46:31,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:30" (2/3) ... [2019-11-25 08:46:31,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e020b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:31, skipping insertion in model container [2019-11-25 08:46:31,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:31" (3/3) ... [2019-11-25 08:46:31,063 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2019-11-25 08:46:31,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:31,078 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:31,087 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:31,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:31,106 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:31,106 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:31,106 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:31,106 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:31,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:31,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:31,107 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-25 08:46:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:46:31,124 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:31,125 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:31,126 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-25 08:46:31,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:31,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022705930] [2019-11-25 08:46:31,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:31,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:46:31,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,238 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022705930] [2019-11-25 08:46:31,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:31,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:46:31,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338873041] [2019-11-25 08:46:31,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:31,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:31,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:31,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:31,257 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-25 08:46:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:31,271 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-25 08:46:31,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:31,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:46:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:31,282 INFO L225 Difference]: With dead ends: 54 [2019-11-25 08:46:31,283 INFO L226 Difference]: Without dead ends: 25 [2019-11-25 08:46:31,285 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 [2019-11-25 08:46:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-25 08:46:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-25 08:46:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:46:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-25 08:46:31,318 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-25 08:46:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:31,318 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-25 08:46:31,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-25 08:46:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:46:31,319 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:31,320 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:31,524 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:46:31,527 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:31,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-25 08:46:31,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:31,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327822302] [2019-11-25 08:46:31,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:31,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:46:31,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,625 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327822302] [2019-11-25 08:46:31,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:31,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:46:31,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250071121] [2019-11-25 08:46:31,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:46:31,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:31,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:46:31,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:31,662 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-25 08:46:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:31,795 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-25 08:46:31,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:31,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:46:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:31,798 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:46:31,798 INFO L226 Difference]: Without dead ends: 47 [2019-11-25 08:46:31,799 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 [2019-11-25 08:46:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-25 08:46:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-25 08:46:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:46:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-25 08:46:31,811 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-25 08:46:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:31,812 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-25 08:46:31,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:46:31,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-25 08:46:31,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:46:31,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:31,815 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:32,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:46:32,017 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-25 08:46:32,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:32,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504065333] [2019-11-25 08:46:32,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:32,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:32,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:32,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:32,170 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:32,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504065333] [2019-11-25 08:46:32,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:32,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-25 08:46:32,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100630285] [2019-11-25 08:46:32,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:46:32,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:32,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:46:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:46:32,294 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-25 08:46:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:32,558 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-25 08:46:32,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:32,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-25 08:46:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:32,559 INFO L225 Difference]: With dead ends: 36 [2019-11-25 08:46:32,559 INFO L226 Difference]: Without dead ends: 27 [2019-11-25 08:46:32,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:46:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-25 08:46:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-25 08:46:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:46:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-25 08:46:32,565 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-25 08:46:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:32,565 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-25 08:46:32,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:46:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-25 08:46:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:46:32,566 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:32,566 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:32,767 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:46:32,767 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:32,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-25 08:46:32,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:32,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811747290] [2019-11-25 08:46:32,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:32,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:46:32,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:32,866 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:32,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811747290] [2019-11-25 08:46:32,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:32,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:46:32,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292256103] [2019-11-25 08:46:32,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:46:32,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:32,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:46:32,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:32,885 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-25 08:46:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:32,992 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-25 08:46:32,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:32,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-25 08:46:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:32,997 INFO L225 Difference]: With dead ends: 52 [2019-11-25 08:46:32,997 INFO L226 Difference]: Without dead ends: 47 [2019-11-25 08:46:32,998 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 [2019-11-25 08:46:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-25 08:46:33,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-25 08:46:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-25 08:46:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-25 08:46:33,004 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-25 08:46:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:33,004 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-25 08:46:33,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:46:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-25 08:46:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:46:33,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:33,006 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:33,218 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:46:33,218 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-25 08:46:33,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:33,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602791540] [2019-11-25 08:46:33,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:33,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:46:33,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:33,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:33,447 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:33,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602791540] [2019-11-25 08:46:33,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:33,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-25 08:46:33,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337802525] [2019-11-25 08:46:33,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:46:33,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:33,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:46:33,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:46:33,580 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-25 08:46:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:33,939 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-25 08:46:33,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:33,939 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-25 08:46:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:33,940 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:46:33,940 INFO L226 Difference]: Without dead ends: 23 [2019-11-25 08:46:33,941 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:46:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-25 08:46:33,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-25 08:46:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:46:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-25 08:46:33,945 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-25 08:46:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:33,945 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-25 08:46:33,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:46:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-25 08:46:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:46:33,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:33,946 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:34,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:46:34,158 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-25 08:46:34,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:34,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175375368] [2019-11-25 08:46:34,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/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 [2019-11-25 08:46:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:34,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:34,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:34,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:34,319 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:34,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175375368] [2019-11-25 08:46:34,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:34,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-25 08:46:34,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460923377] [2019-11-25 08:46:34,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:46:34,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:34,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:46:34,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:46:34,382 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-25 08:46:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:34,611 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-25 08:46:34,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:34,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-25 08:46:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:34,612 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:46:34,612 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:46:34,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:46:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:46:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:46:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:46:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:46:34,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-25 08:46:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:34,613 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:34,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:46:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:34,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:46:34,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:46:34,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:46:35,006 INFO L440 ceAbstractionStarter]: At program point L31(lines 11 32) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-25 08:46:35,007 INFO L440 ceAbstractionStarter]: At program point L31-1(lines 11 32) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0))) [2019-11-25 08:46:35,007 INFO L440 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-25 08:46:35,007 INFO L444 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-25 08:46:35,007 INFO L444 ceAbstractionStarter]: For program point L40-2(line 40) no Hoare annotation was computed. [2019-11-25 08:46:35,007 INFO L440 ceAbstractionStarter]: At program point L40-3(lines 34 41) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-25 08:46:35,007 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:46:35,007 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 31) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point L28-1(lines 28 31) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:46:35,008 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-25 08:46:35,009 INFO L444 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2019-11-25 08:46:35,009 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 25 31) no Hoare annotation was computed. [2019-11-25 08:46:35,009 INFO L447 ceAbstractionStarter]: At program point L63(lines 46 64) the Hoare annotation is: true [2019-11-25 08:46:35,009 INFO L444 ceAbstractionStarter]: For program point L59(line 59) no Hoare annotation was computed. [2019-11-25 08:46:35,009 INFO L444 ceAbstractionStarter]: For program point L22(lines 22 31) no Hoare annotation was computed. [2019-11-25 08:46:35,010 INFO L444 ceAbstractionStarter]: For program point L22-1(lines 22 31) no Hoare annotation was computed. [2019-11-25 08:46:35,010 INFO L444 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-11-25 08:46:35,010 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-25 08:46:35,010 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 11 32) no Hoare annotation was computed. [2019-11-25 08:46:35,010 INFO L444 ceAbstractionStarter]: For program point L14-5(lines 14 18) no Hoare annotation was computed. [2019-11-25 08:46:35,010 INFO L440 ceAbstractionStarter]: At program point L14-6(lines 14 18) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2019-11-25 08:46:35,010 INFO L444 ceAbstractionStarter]: For program point L14-7(lines 11 32) no Hoare annotation was computed. [2019-11-25 08:46:35,011 INFO L444 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-11-25 08:46:35,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:35 BoogieIcfgContainer [2019-11-25 08:46:35,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:35,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:35,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:35,031 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:35,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:31" (3/4) ... [2019-11-25 08:46:35,034 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:46:35,046 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-25 08:46:35,046 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:46:35,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:46:35,070 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2019-11-25 08:46:35,070 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) [2019-11-25 08:46:35,071 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) [2019-11-25 08:46:35,099 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_838d72f2-3914-42ec-9ffd-bedf57d0fac2/bin/uautomizer/witness.graphml [2019-11-25 08:46:35,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:35,101 INFO L168 Benchmark]: Toolchain (without parser) took 4898.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 956.4 MB in the beginning and 910.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 200.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,102 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-25 08:46:35,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -205.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,103 INFO L168 Benchmark]: Boogie Preprocessor took 30.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,104 INFO L168 Benchmark]: RCFGBuilder took 434.88 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,104 INFO L168 Benchmark]: TraceAbstraction took 3972.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 917.3 MB in the end (delta: 202.2 MB). Peak memory consumption was 202.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,105 INFO L168 Benchmark]: Witness Printer took 69.32 ms. Allocated memory is still 1.2 GB. Free memory was 917.3 MB in the beginning and 910.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:35,107 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 290.85 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 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 90.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -205.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 434.88 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3972.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 917.3 MB in the end (delta: 202.2 MB). Peak memory consumption was 202.2 MB. Max. memory is 11.5 GB. * Witness Printer took 69.32 ms. Allocated memory is still 1.2 GB. Free memory was 917.3 MB in the beginning and 910.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: 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: 11]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2019-11-25 08:46:35,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,115 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2019-11-25 08:46:35,116 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-25 08:46:35,116 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...