./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.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_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 c87f23af740954e6de1a94dd09957e85cd60c58b ........................................................................................................................................................................................................................ 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_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 c87f23af740954e6de1a94dd09957e85cd60c58b ....................................................................................................................................................................................................................................................................................................................................................................... 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 12:58:11,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:58:11,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:58:11,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:58:11,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:58:11,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:58:11,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:58:11,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:58:11,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:58:11,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:58:11,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:58:11,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:58:11,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:58:11,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:58:11,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:58:11,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:58:11,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:58:11,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:58:11,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:58:11,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:58:11,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:58:11,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:58:11,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:58:11,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:58:11,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:58:11,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:58:11,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:58:11,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:58:11,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:58:11,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:58:11,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:58:11,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:58:11,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:58:11,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:58:11,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:58:11,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:58:11,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:58:11,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:58:11,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:58:11,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:58:11,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:58:11,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:58:11,446 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:58:11,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:58:11,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:58:11,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:58:11,447 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:58:11,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:58:11,447 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:58:11,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:58:11,448 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:58:11,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:58:11,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:58:11,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:58:11,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:58:11,450 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_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-12-07 12:58:11,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:58:11,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:58:11,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:58:11,568 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:58:11,568 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:58:11,569 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-12-07 12:58:11,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/728c55062/287e41da9dc246d6bf56c583a57e0e4d/FLAG607fb5376 [2019-12-07 12:58:12,025 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:58:12,025 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-12-07 12:58:12,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/728c55062/287e41da9dc246d6bf56c583a57e0e4d/FLAG607fb5376 [2019-12-07 12:58:12,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/728c55062/287e41da9dc246d6bf56c583a57e0e4d [2019-12-07 12:58:12,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:58:12,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:58:12,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:58:12,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:58:12,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:58:12,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f08bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12, skipping insertion in model container [2019-12-07 12:58:12,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:58:12,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:58:12,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:58:12,222 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:58:12,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:58:12,247 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:58:12,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12 WrapperNode [2019-12-07 12:58:12,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:58:12,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:58:12,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:58:12,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:58:12,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:58:12,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:58:12,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:58:12,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:58:12,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... [2019-12-07 12:58:12,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:58:12,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:58:12,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:58:12,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:58:12,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 12:58:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:58:12,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:58:12,404 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:58:12,404 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 12:58:12,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:12 BoogieIcfgContainer [2019-12-07 12:58:12,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:58:12,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:58:12,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:58:12,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:58:12,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:58:12" (1/3) ... [2019-12-07 12:58:12,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795d2af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:12, skipping insertion in model container [2019-12-07 12:58:12,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:12" (2/3) ... [2019-12-07 12:58:12,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795d2af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:12, skipping insertion in model container [2019-12-07 12:58:12,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:12" (3/3) ... [2019-12-07 12:58:12,410 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-12-07 12:58:12,416 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:58:12,420 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 12:58:12,428 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 12:58:12,442 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:58:12,442 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:58:12,442 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:58:12,442 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:58:12,442 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:58:12,443 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:58:12,443 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:58:12,443 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:58:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 12:58:12,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 12:58:12,455 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:58:12,456 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 12:58:12,456 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:58:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:58:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 12:58:12,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:58:12,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309705916] [2019-12-07 12:58:12,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:58:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:58:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:58:12,529 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:58:12,530 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:58:12,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:58:12 BoogieIcfgContainer [2019-12-07 12:58:12,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:58:12,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:58:12,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:58:12,540 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:58:12,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:12" (3/4) ... [2019-12-07 12:58:12,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 12:58:12,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:58:12,544 INFO L168 Benchmark]: Toolchain (without parser) took 502.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 940.8 MB in the beginning and 1.0 GB in the end (delta: -99.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:58:12,545 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:58:12,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -126.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:12,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.40 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 12:58:12,547 INFO L168 Benchmark]: Boogie Preprocessor took 10.67 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 12:58:12,547 INFO L168 Benchmark]: RCFGBuilder took 125.81 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:12,548 INFO L168 Benchmark]: TraceAbstraction took 133.76 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:12,548 INFO L168 Benchmark]: Witness Printer took 2.94 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 12:58:12,552 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 72.4 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -126.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.40 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 10.67 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 125.81 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: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 133.76 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 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: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 12:58:13,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:58:13,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:58:13,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:58:13,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:58:13,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:58:13,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:58:13,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:58:13,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:58:13,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:58:13,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:58:13,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:58:13,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:58:13,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:58:13,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:58:13,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:58:13,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:58:13,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:58:13,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:58:13,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:58:13,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:58:13,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:58:13,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:58:13,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:58:13,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:58:13,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:58:13,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:58:13,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:58:13,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:58:13,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:58:13,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:58:13,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:58:13,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:58:13,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:58:13,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:58:13,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:58:13,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:58:13,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:58:13,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:58:13,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:58:13,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:58:13,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 12:58:13,959 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:58:13,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:58:13,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:58:13,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:58:13,960 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:58:13,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:58:13,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:58:13,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:58:13,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:58:13,961 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:58:13,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:58:13,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:58:13,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:58:13,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 12:58:13,963 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_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-12-07 12:58:14,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:58:14,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:58:14,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:58:14,149 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:58:14,149 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:58:14,150 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-12-07 12:58:14,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/f0f63640b/eb7b40dd19204f2ead35ccb9b828fd10/FLAG29f68d6c1 [2019-12-07 12:58:14,631 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:58:14,632 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-12-07 12:58:14,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/f0f63640b/eb7b40dd19204f2ead35ccb9b828fd10/FLAG29f68d6c1 [2019-12-07 12:58:14,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/data/f0f63640b/eb7b40dd19204f2ead35ccb9b828fd10 [2019-12-07 12:58:14,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:58:14,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:58:14,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:58:14,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:58:14,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:58:14,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d14a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14, skipping insertion in model container [2019-12-07 12:58:14,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:58:14,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:58:14,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:58:14,784 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:58:14,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:58:14,809 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:58:14,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14 WrapperNode [2019-12-07 12:58:14,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:58:14,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:58:14,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:58:14,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:58:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:58:14,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:58:14,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:58:14,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:58:14,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... [2019-12-07 12:58:14,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:58:14,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:58:14,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:58:14,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:58:14,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 12:58:14,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:58:14,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:58:15,618 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:58:15,619 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 12:58:15,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:15 BoogieIcfgContainer [2019-12-07 12:58:15,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:58:15,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:58:15,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:58:15,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:58:15,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:58:14" (1/3) ... [2019-12-07 12:58:15,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb476ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:15, skipping insertion in model container [2019-12-07 12:58:15,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:58:14" (2/3) ... [2019-12-07 12:58:15,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb476ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:58:15, skipping insertion in model container [2019-12-07 12:58:15,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:15" (3/3) ... [2019-12-07 12:58:15,624 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-12-07 12:58:15,631 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:58:15,635 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 12:58:15,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 12:58:15,657 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:58:15,657 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:58:15,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:58:15,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:58:15,657 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:58:15,657 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:58:15,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:58:15,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:58:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 12:58:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 12:58:15,670 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:58:15,671 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 12:58:15,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:58:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:58:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-12-07 12:58:15,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:58:15,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245520153] [2019-12-07 12:58:15,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 12:58:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:58:15,755 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:58:15,758 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:58:15,812 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 12:58:15,812 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:58:15,851 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 12:58:15,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245520153] [2019-12-07 12:58:15,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:58:15,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 12:58:15,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509007693] [2019-12-07 12:58:15,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:58:15,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:58:15,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:58:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:15,866 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-12-07 12:58:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:58:16,534 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-12-07 12:58:16,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:58:16,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-12-07 12:58:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:58:16,541 INFO L225 Difference]: With dead ends: 27 [2019-12-07 12:58:16,541 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 12:58:16,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 12:58:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 12:58:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 12:58:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-12-07 12:58:16,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2019-12-07 12:58:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:58:16,571 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-12-07 12:58:16,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:58:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-12-07 12:58:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:58:16,571 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:58:16,571 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:58:16,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 12:58:16,773 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:58:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:58:16,773 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-12-07 12:58:16,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:58:16,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073328027] [2019-12-07 12:58:16,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 12:58:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:58:17,019 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 12:58:17,019 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:58:17,042 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 12:58:17,043 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:58:17,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:58:17,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073328027] [2019-12-07 12:58:17,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:58:17,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 12:58:17,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661360676] [2019-12-07 12:58:17,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:58:17,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:58:17,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:58:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:17,079 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2019-12-07 12:58:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:58:17,466 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 12:58:17,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:58:17,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-12-07 12:58:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:58:17,468 INFO L225 Difference]: With dead ends: 11 [2019-12-07 12:58:17,468 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 12:58:17,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 12:58:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 12:58:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 12:58:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-12-07 12:58:17,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2019-12-07 12:58:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:58:17,470 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-12-07 12:58:17,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:58:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-12-07 12:58:17,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 12:58:17,471 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:58:17,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:58:17,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 12:58:17,672 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:58:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:58:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-12-07 12:58:17,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 12:58:17,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903217845] [2019-12-07 12:58:17,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/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 12:58:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:58:17,928 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 12:58:17,929 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:58:17,954 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 12:58:17,954 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 12:58:17,981 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 12:58:17,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903217845] [2019-12-07 12:58:17,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:58:17,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 12:58:17,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723106394] [2019-12-07 12:58:17,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 12:58:17,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 12:58:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 12:58:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:17,982 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2019-12-07 12:58:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:58:18,534 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-12-07 12:58:18,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:58:18,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-12-07 12:58:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:58:18,540 INFO L225 Difference]: With dead ends: 9 [2019-12-07 12:58:18,540 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 12:58:18,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:58:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 12:58:18,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 12:58:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 12:58:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 12:58:18,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 12:58:18,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:58:18,541 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 12:58:18,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 12:58:18,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 12:58:18,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 12:58:18,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 12:58:18,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 12:58:18,751 INFO L246 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2019-12-07 12:58:18,751 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2019-12-07 12:58:18,752 INFO L246 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point L36(lines 1 50) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point L3(lines 3 24) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 12:58:18,753 INFO L246 CegarLoopResult]: For program point L26(lines 26 34) no Hoare annotation was computed. [2019-12-07 12:58:18,754 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-12-07 12:58:18,754 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-12-07 12:58:18,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:58:18 BoogieIcfgContainer [2019-12-07 12:58:18,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:58:18,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:58:18,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:58:18,763 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:58:18,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:58:15" (3/4) ... [2019-12-07 12:58:18,766 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 12:58:18,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 12:58:18,773 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 12:58:18,800 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f02175f-2f98-46b4-8ffc-9f63002370fc/bin/uautomizer/witness.graphml [2019-12-07 12:58:18,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:58:18,801 INFO L168 Benchmark]: Toolchain (without parser) took 4153.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 953.7 MB in the beginning and 1.0 GB in the end (delta: -59.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,801 INFO L168 Benchmark]: CDTParser took 0.14 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 12:58:18,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,803 INFO L168 Benchmark]: Boogie Preprocessor took 14.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,803 INFO L168 Benchmark]: RCFGBuilder took 743.95 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,803 INFO L168 Benchmark]: TraceAbstraction took 3141.75 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: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,804 INFO L168 Benchmark]: Witness Printer took 37.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 12:58:18,805 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 161.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 937.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 743.95 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3141.75 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: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. * Witness Printer took 37.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Result: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 41 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...