./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 .......................................................................................................................................................................................................................................................................................................................................................... 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_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:51:05,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:51:05,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:51:05,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:51:05,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:51:05,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:51:05,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:51:05,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:51:05,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:51:05,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:51:05,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:51:05,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:51:05,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:51:05,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:51:05,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:51:05,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:51:05,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:51:05,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:51:05,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:51:05,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:51:05,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:51:05,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:51:05,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:51:05,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:51:05,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:51:05,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:51:05,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:51:05,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:51:05,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:51:05,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:51:05,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:51:05,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:51:05,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:51:05,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:51:05,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:51:05,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:51:05,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:51:05,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:51:05,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:51:05,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:51:05,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:51:05,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:51:05,629 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:51:05,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:51:05,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:51:05,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:51:05,630 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:51:05,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:51:05,631 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:51:05,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:51:05,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:51:05,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:51:05,632 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:51:05,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:51:05,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:51:05,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:51:05,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:51:05,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:51:05,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:51:05,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:51:05,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:51:05,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:51:05,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:51:05,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:51:05,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:51:05,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:51:05,635 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_5eabcbfe-9042-4961-a62e-1016baea702a/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-12-07 17:51:05,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:51:05,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:51:05,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:51:05,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:51:05,748 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:51:05,749 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-12-07 17:51:05,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/4f714e79c/b3a27f51471a4ae1913ebe6b04618fdf/FLAGb5d5df6bf [2019-12-07 17:51:06,194 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:51:06,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-12-07 17:51:06,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/4f714e79c/b3a27f51471a4ae1913ebe6b04618fdf/FLAGb5d5df6bf [2019-12-07 17:51:06,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/4f714e79c/b3a27f51471a4ae1913ebe6b04618fdf [2019-12-07 17:51:06,208 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:51:06,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:51:06,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:51:06,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:51:06,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:51:06,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5feb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06, skipping insertion in model container [2019-12-07 17:51:06,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:51:06,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:51:06,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:51:06,377 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:51:06,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:51:06,407 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:51:06,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06 WrapperNode [2019-12-07 17:51:06,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:51:06,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:51:06,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:51:06,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:51:06,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:51:06,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:51:06,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:51:06,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:51:06,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... [2019-12-07 17:51:06,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:51:06,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:51:06,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:51:06,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:51:06,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 17:51:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:51:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:51:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:51:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:51:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:51:06,658 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:51:06,658 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 17:51:06,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:06 BoogieIcfgContainer [2019-12-07 17:51:06,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:51:06,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:51:06,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:51:06,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:51:06,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:51:06" (1/3) ... [2019-12-07 17:51:06,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfd10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:51:06, skipping insertion in model container [2019-12-07 17:51:06,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:06" (2/3) ... [2019-12-07 17:51:06,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfd10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:51:06, skipping insertion in model container [2019-12-07 17:51:06,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:06" (3/3) ... [2019-12-07 17:51:06,664 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-12-07 17:51:06,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:51:06,674 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:51:06,681 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:51:06,697 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:51:06,697 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:51:06,697 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:51:06,697 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:51:06,697 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:51:06,697 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:51:06,697 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:51:06,697 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:51:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 17:51:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:51:06,711 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:06,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:06,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:06,716 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 17:51:06,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:51:06,721 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064274453] [2019-12-07 17:51:06,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:51:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:06,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064274453] [2019-12-07 17:51:06,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:06,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:51:06,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923945866] [2019-12-07 17:51:06,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:51:06,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:51:06,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:51:06,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:51:06,815 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 17:51:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:06,827 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 17:51:06,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:51:06,828 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:51:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:06,834 INFO L225 Difference]: With dead ends: 54 [2019-12-07 17:51:06,835 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 17:51:06,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:51:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 17:51:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 17:51:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 17:51:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 17:51:06,858 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 17:51:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:06,859 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 17:51:06,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:51:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 17:51:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:51:06,859 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:06,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:06,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:06,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:06,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 17:51:06,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:51:06,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257338145] [2019-12-07 17:51:06,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:51:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:06,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257338145] [2019-12-07 17:51:06,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:06,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:51:06,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273555478] [2019-12-07 17:51:06,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:51:06,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:51:06,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:51:06,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:51:06,912 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-12-07 17:51:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:06,951 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-12-07 17:51:06,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:51:06,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 17:51:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:06,952 INFO L225 Difference]: With dead ends: 41 [2019-12-07 17:51:06,952 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 17:51:06,952 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 [2019-12-07 17:51:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 17:51:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-12-07 17:51:06,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:51:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 17:51:06,956 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 17:51:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:06,957 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 17:51:06,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:51:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 17:51:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:51:06,957 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:06,957 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:06,957 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:06,958 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-12-07 17:51:06,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:51:06,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343787036] [2019-12-07 17:51:06,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:51:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:06,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343787036] [2019-12-07 17:51:06,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:06,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:51:06,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519618497] [2019-12-07 17:51:06,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:51:06,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:51:06,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:51:06,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:51:06,993 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-12-07 17:51:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:07,028 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-12-07 17:51:07,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:51:07,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 17:51:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:07,029 INFO L225 Difference]: With dead ends: 43 [2019-12-07 17:51:07,029 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 17:51:07,029 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 [2019-12-07 17:51:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 17:51:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-12-07 17:51:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:51:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 17:51:07,033 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-12-07 17:51:07,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:07,033 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 17:51:07,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:51:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 17:51:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:51:07,033 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:07,034 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:07,034 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:07,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 17:51:07,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:51:07,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246660465] [2019-12-07 17:51:07,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:51:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:51:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:51:07,076 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:51:07,076 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:51:07,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:51:07 BoogieIcfgContainer [2019-12-07 17:51:07,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:51:07,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:51:07,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:51:07,094 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:51:07,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:06" (3/4) ... [2019-12-07 17:51:07,096 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:51:07,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:51:07,098 INFO L168 Benchmark]: Toolchain (without parser) took 888.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -83.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:07,098 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:51:07,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:07,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:51:07,099 INFO L168 Benchmark]: Boogie Preprocessor took 18.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:07,100 INFO L168 Benchmark]: RCFGBuilder took 205.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:07,100 INFO L168 Benchmark]: TraceAbstraction took 433.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:07,100 INFO L168 Benchmark]: Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:51:07,103 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 198.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -155.6 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.64 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 205.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 433.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 65]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryArithmeticFLOAToperation at line 60. Possible FailurePath: [L60] float x = 0.0f / 0.0f; [L61] float y = 0.0f / 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L62] float res = fmax_float(x, y); [L54] return x != x; [L64] COND TRUE !isnan_float(res) [L65] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, 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, 0.0s 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 0.1.25-f470102 [2019-12-07 17:51:08,496 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-12-07 17:51:08,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:51:08,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:51:08,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:51:08,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:51:08,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:51:08,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:51:08,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:51:08,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:51:08,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:51:08,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:51:08,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:51:08,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:51:08,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:51:08,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:51:08,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:51:08,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:51:08,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:51:08,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:51:08,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:51:08,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:51:08,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:51:08,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:51:08,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:51:08,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:51:08,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:51:08,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:51:08,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:51:08,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:51:08,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:51:08,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:51:08,540 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:51:08,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:51:08,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:51:08,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:51:08,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:51:08,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:51:08,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:51:08,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:51:08,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:51:08,545 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:51:08,545 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:51:08,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:51:08,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:51:08,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:51:08,545 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_5eabcbfe-9042-4961-a62e-1016baea702a/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 -> 7aa9ac80ed7bb9ce6b78459a496e265402ed9cc3 [2019-12-07 17:51:08,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:51:08,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:51:08,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:51:08,740 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:51:08,740 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:51:08,741 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-12-07 17:51:08,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/92611edd3/746bfaafc504498c8967cbd9150ba447/FLAGf15dcbb13 [2019-12-07 17:51:09,105 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:51:09,106 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2019-12-07 17:51:09,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/92611edd3/746bfaafc504498c8967cbd9150ba447/FLAGf15dcbb13 [2019-12-07 17:51:09,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/data/92611edd3/746bfaafc504498c8967cbd9150ba447 [2019-12-07 17:51:09,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:51:09,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:51:09,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:51:09,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:51:09,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:51:09,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09, skipping insertion in model container [2019-12-07 17:51:09,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:51:09,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:51:09,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:51:09,259 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:51:09,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:51:09,295 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:51:09,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09 WrapperNode [2019-12-07 17:51:09,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:51:09,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:51:09,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:51:09,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:51:09,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:51:09,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:51:09,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:51:09,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:51:09,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... [2019-12-07 17:51:09,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:51:09,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:51:09,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:51:09,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:51:09,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:51:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 17:51:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:51:09,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:51:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 17:51:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:51:09,621 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:51:09,621 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 17:51:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:09 BoogieIcfgContainer [2019-12-07 17:51:09,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:51:09,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:51:09,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:51:09,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:51:09,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:51:09" (1/3) ... [2019-12-07 17:51:09,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1100c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:51:09, skipping insertion in model container [2019-12-07 17:51:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:51:09" (2/3) ... [2019-12-07 17:51:09,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1100c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:51:09, skipping insertion in model container [2019-12-07 17:51:09,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:09" (3/3) ... [2019-12-07 17:51:09,626 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2019-12-07 17:51:09,632 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:51:09,636 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:51:09,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:51:09,659 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:51:09,660 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:51:09,660 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:51:09,660 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:51:09,660 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:51:09,660 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:51:09,660 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:51:09,660 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:51:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 17:51:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:51:09,674 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:09,675 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:09,675 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 17:51:09,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:09,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130001031] [2019-12-07 17:51:09,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:09,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 17:51:09,742 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:09,751 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:09,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130001031] [2019-12-07 17:51:09,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:09,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 17:51:09,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638784007] [2019-12-07 17:51:09,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 17:51:09,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:09,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 17:51:09,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:51:09,768 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 17:51:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:09,780 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 17:51:09,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 17:51:09,781 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 17:51:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:09,788 INFO L225 Difference]: With dead ends: 54 [2019-12-07 17:51:09,788 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 17:51:09,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 17:51:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 17:51:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 17:51:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 17:51:09,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 17:51:09,813 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 17:51:09,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:09,813 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 17:51:09,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 17:51:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 17:51:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:51:09,814 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:09,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:10,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:51:10,015 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:10,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 17:51:10,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:10,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614424981] [2019-12-07 17:51:10,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:10,110 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:51:10,111 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:10,127 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:10,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614424981] [2019-12-07 17:51:10,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:10,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:51:10,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472053773] [2019-12-07 17:51:10,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:51:10,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:10,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:51:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:51:10,144 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-12-07 17:51:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:10,200 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-12-07 17:51:10,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:51:10,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 17:51:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:10,201 INFO L225 Difference]: With dead ends: 52 [2019-12-07 17:51:10,201 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 17:51:10,202 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 [2019-12-07 17:51:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 17:51:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 17:51:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:51:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 17:51:10,207 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 17:51:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:10,207 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 17:51:10,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:51:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 17:51:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 17:51:10,208 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:10,208 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:10,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:51:10,409 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:10,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 17:51:10,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:10,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136216944] [2019-12-07 17:51:10,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:10,554 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:51:10,555 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:10,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:51:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:10,620 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:10,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136216944] [2019-12-07 17:51:10,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:10,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 17:51:10,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008221697] [2019-12-07 17:51:10,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:51:10,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:10,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:51:10,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:51:10,682 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-12-07 17:51:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:11,145 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-12-07 17:51:11,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:51:11,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-12-07 17:51:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:11,146 INFO L225 Difference]: With dead ends: 36 [2019-12-07 17:51:11,146 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 17:51:11,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:51:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 17:51:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-12-07 17:51:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 17:51:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-12-07 17:51:11,150 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-12-07 17:51:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:11,151 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-12-07 17:51:11,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:51:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-12-07 17:51:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 17:51:11,151 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:11,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:11,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:51:11,352 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-12-07 17:51:11,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:11,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370991806] [2019-12-07 17:51:11,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:11,406 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:51:11,407 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:11,416 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:11,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370991806] [2019-12-07 17:51:11,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:11,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 17:51:11,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022757551] [2019-12-07 17:51:11,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:51:11,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:11,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:51:11,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:51:11,428 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-12-07 17:51:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:11,487 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-12-07 17:51:11,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:51:11,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 17:51:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:11,488 INFO L225 Difference]: With dead ends: 52 [2019-12-07 17:51:11,488 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 17:51:11,488 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 [2019-12-07 17:51:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 17:51:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 17:51:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:51:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-12-07 17:51:11,492 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-12-07 17:51:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:11,493 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 17:51:11,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:51:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-12-07 17:51:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 17:51:11,493 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:11,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:11,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 17:51:11,695 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:11,696 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-12-07 17:51:11,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:11,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655916579] [2019-12-07 17:51:11,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:11,760 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 17:51:11,761 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:11,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:51:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:11,836 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:11,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655916579] [2019-12-07 17:51:11,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:11,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-12-07 17:51:11,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879000663] [2019-12-07 17:51:11,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 17:51:11,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:11,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 17:51:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:51:11,920 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-12-07 17:51:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:12,220 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-12-07 17:51:12,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:51:12,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-12-07 17:51:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:12,221 INFO L225 Difference]: With dead ends: 32 [2019-12-07 17:51:12,221 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 17:51:12,222 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:51:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 17:51:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 17:51:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 17:51:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 17:51:12,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-12-07 17:51:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:12,225 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 17:51:12,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 17:51:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 17:51:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:51:12,226 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:51:12,226 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:51:12,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 17:51:12,427 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:51:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:51:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-12-07 17:51:12,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:51:12,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131483314] [2019-12-07 17:51:12,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/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 [2019-12-07 17:51:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:51:12,532 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:51:12,533 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:51:12,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:51:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:12,585 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:51:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:51:12,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131483314] [2019-12-07 17:51:12,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:51:12,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 17:51:12,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616389414] [2019-12-07 17:51:12,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:51:12,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:51:12,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:51:12,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:51:12,641 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-12-07 17:51:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:51:12,798 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-12-07 17:51:12,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:51:12,798 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-12-07 17:51:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:51:12,799 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:51:12,799 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:51:12,799 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 [2019-12-07 17:51:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:51:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:51:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:51:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:51:12,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-07 17:51:12,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:51:12,800 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:51:12,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:51:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:51:12,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:51:13,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 17:51:13,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point L64(lines 64 67) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L249 CegarLoopResult]: At program point L69(lines 56 70) the Hoare annotation is: true [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point L36(lines 36 39) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:51:13,215 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L33(lines 33 39) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L242 CegarLoopResult]: At program point L54(line 54) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L242 CegarLoopResult]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_float_~y (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmax_float_#res| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L30(lines 30 39) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L246 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2019-12-07 17:51:13,216 INFO L242 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-12-07 17:51:13,217 INFO L246 CegarLoopResult]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2019-12-07 17:51:13,217 INFO L246 CegarLoopResult]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2019-12-07 17:51:13,217 INFO L242 CegarLoopResult]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-12-07 17:51:13,217 INFO L246 CegarLoopResult]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2019-12-07 17:51:13,217 INFO L246 CegarLoopResult]: For program point L47(lines 47 49) no Hoare annotation was computed. [2019-12-07 17:51:13,217 INFO L246 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2019-12-07 17:51:13,217 INFO L242 CegarLoopResult]: At program point L39(lines 19 40) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))) [2019-12-07 17:51:13,217 INFO L242 CegarLoopResult]: At program point L39-1(lines 19 40) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x))))) [2019-12-07 17:51:13,221 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,227 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,228 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:51:13 BoogieIcfgContainer [2019-12-07 17:51:13,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:51:13,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:51:13,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:51:13,231 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:51:13,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:51:09" (3/4) ... [2019-12-07 17:51:13,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:51:13,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 17:51:13,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 17:51:13,242 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:51:13,260 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 17:51:13,260 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 17:51:13,261 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) [2019-12-07 17:51:13,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5eabcbfe-9042-4961-a62e-1016baea702a/bin/uautomizer/witness.graphml [2019-12-07 17:51:13,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:51:13,281 INFO L168 Benchmark]: Toolchain (without parser) took 4158.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 953.7 MB in the beginning and 862.3 MB in the end (delta: 91.5 MB). Peak memory consumption was 219.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,281 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:51:13,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 941.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,282 INFO L168 Benchmark]: Boogie Preprocessor took 21.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:51:13,282 INFO L168 Benchmark]: RCFGBuilder took 233.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,283 INFO L168 Benchmark]: TraceAbstraction took 3608.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.3 MB in the end (delta: 228.4 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,283 INFO L168 Benchmark]: Witness Printer took 48.89 ms. Allocated memory is still 1.2 GB. Free memory was 869.3 MB in the beginning and 862.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:51:13,284 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 173.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 941.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 233.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3608.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 869.3 MB in the end (delta: 228.4 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. * Witness Printer took 48.89 ms. Allocated memory is still 1.2 GB. Free memory was 869.3 MB in the beginning and 862.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.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] - 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: 65]: 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: 42]: Loop Invariant [2019-12-07 17:51:13,288 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,288 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,288 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,288 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 54]: Loop Invariant [2019-12-07 17:51:13,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 17:51:13,289 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !(0bv32 == \result)) || (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s 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, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 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...