./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3309a0b9ddf6a439ec38f457e14947ace4c70ec ............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3309a0b9ddf6a439ec38f457e14947ace4c70ec ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:52:38,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:52:38,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:52:38,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:52:38,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:52:38,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:52:38,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:52:38,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:52:38,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:52:38,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:52:38,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:52:38,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:52:38,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:52:38,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:52:38,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:52:38,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:52:38,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:52:38,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:52:38,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:52:38,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:52:38,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:52:38,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:52:38,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:52:38,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:52:38,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:52:38,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:52:38,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:52:38,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:52:38,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:52:38,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:52:38,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:52:38,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:52:38,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:52:38,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:52:38,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:52:38,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:52:38,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:52:38,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:52:38,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:52:38,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:52:38,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:52:38,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:52:38,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:52:38,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:52:38,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:52:38,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:52:38,574 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:52:38,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:52:38,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:52:38,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:52:38,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:52:38,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:52:38,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:52:38,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:52:38,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:52:38,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:52:38,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:52:38,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:52:38,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:52:38,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:52:38,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:52:38,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:52:38,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:52:38,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:52:38,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:52:38,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:52:38,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:52:38,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:52:38,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:52:38,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:52:38,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:52:38,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-11-29 22:52:38,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:52:38,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:52:38,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:52:38,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:52:38,958 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:52:38,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-11-29 22:52:39,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/d918867cb/68000ebc93e848fcbf179d0e4fe47b40/FLAG01af3ae9f [2020-11-29 22:52:39,601 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:52:39,601 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-11-29 22:52:39,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/d918867cb/68000ebc93e848fcbf179d0e4fe47b40/FLAG01af3ae9f [2020-11-29 22:52:39,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/d918867cb/68000ebc93e848fcbf179d0e4fe47b40 [2020-11-29 22:52:39,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:52:39,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:52:39,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:39,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:52:39,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:52:39,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:39" (1/1) ... [2020-11-29 22:52:39,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ffb2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:39, skipping insertion in model container [2020-11-29 22:52:39,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:39" (1/1) ... [2020-11-29 22:52:40,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:52:40,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:52:40,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:40,340 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:52:40,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:40,431 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:52:40,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40 WrapperNode [2020-11-29 22:52:40,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:40,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:40,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:52:40,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:52:40,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:40,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:52:40,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:52:40,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:52:40,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... [2020-11-29 22:52:40,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:52:40,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:52:40,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:52:40,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:52:40,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:52:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:52:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:52:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 22:52:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:52:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 22:52:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:52:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:52:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:52:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:52:41,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:52:41,198 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 22:52:41,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:41 BoogieIcfgContainer [2020-11-29 22:52:41,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:52:41,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:52:41,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:52:41,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:52:41,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:52:39" (1/3) ... [2020-11-29 22:52:41,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4647299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:41, skipping insertion in model container [2020-11-29 22:52:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:40" (2/3) ... [2020-11-29 22:52:41,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4647299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:52:41, skipping insertion in model container [2020-11-29 22:52:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:41" (3/3) ... [2020-11-29 22:52:41,209 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-11-29 22:52:41,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:52:41,250 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:52:41,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:52:41,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:52:41,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:52:41,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:52:41,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:52:41,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:52:41,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:52:41,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:52:41,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:52:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-29 22:52:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:52:41,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:41,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:41,322 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:41,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2020-11-29 22:52:41,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:41,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268879186] [2020-11-29 22:52:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:52:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:52:41,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268879186] [2020-11-29 22:52:41,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:52:41,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 22:52:41,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685601797] [2020-11-29 22:52:41,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:52:41,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:52:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:52:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:52:41,567 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-29 22:52:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:52:41,589 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-11-29 22:52:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:52:41,591 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 22:52:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:52:41,600 INFO L225 Difference]: With dead ends: 57 [2020-11-29 22:52:41,600 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 22:52:41,603 INFO L677 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 [2020-11-29 22:52:41,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 22:52:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 22:52:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:52:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-11-29 22:52:41,639 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2020-11-29 22:52:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:52:41,640 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-29 22:52:41,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:52:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-11-29 22:52:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:52:41,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:52:41,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:52:41,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:52:41,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:52:41,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:52:41,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2020-11-29 22:52:41,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:52:41,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031385849] [2020-11-29 22:52:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:52:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:52:41,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:52:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:52:41,777 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:52:41,823 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:52:41,824 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:52:41,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 22:52:41,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:52:41 BoogieIcfgContainer [2020-11-29 22:52:41,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:52:41,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:52:41,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:52:41,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:52:41,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:52:41" (3/4) ... [2020-11-29 22:52:41,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:52:41,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:52:41,898 INFO L168 Benchmark]: Toolchain (without parser) took 1913.70 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 79.4 MB in the beginning and 97.2 MB in the end (delta: -17.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:41,898 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:52:41,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.19 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 79.3 MB in the end (delta: -107.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:41,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.42 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 77.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:41,902 INFO L168 Benchmark]: Boogie Preprocessor took 62.42 ms. Allocated memory is still 107.0 MB. Free memory was 77.3 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:41,903 INFO L168 Benchmark]: RCFGBuilder took 635.96 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 55.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:52:41,904 INFO L168 Benchmark]: TraceAbstraction took 687.41 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 54.6 MB in the beginning and 97.9 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:52:41,905 INFO L168 Benchmark]: Witness Printer took 4.52 ms. Allocated memory is still 142.6 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:52:41,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 107.0 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 448.19 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 79.3 MB in the end (delta: -107.3 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.42 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 77.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.42 ms. Allocated memory is still 107.0 MB. Free memory was 77.3 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 635.96 ms. Allocated memory is still 107.0 MB. Free memory was 75.6 MB in the beginning and 55.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687.41 ms. Allocated memory was 107.0 MB in the beginning and 142.6 MB in the end (delta: 35.7 MB). Free memory was 54.6 MB in the beginning and 97.9 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.52 ms. Allocated memory is still 142.6 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 129, overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L137] double x = 0.0 / 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] double res = __ieee754_log(x); [L129] return x != x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L141] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_0921.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-29 22:52:44,381 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 22:52:44,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:52:44,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:52:44,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:52:44,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:52:44,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:52:44,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:52:44,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:52:44,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:52:44,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:52:44,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:52:44,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:52:44,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:52:44,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-29 22:52:44,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:52:44,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:52:44,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:52:44,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:52:44,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:52:44,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:52:44,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:52:44,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:52:44,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:52:44,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:52:44,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:52:44,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 22:52:44,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:52:44,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:52:44,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:52:44,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:52:44,579 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:52:44,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:52:44,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:52:44,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:52:44,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:52:44,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:52:44,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:52:44,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:52:44,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:52:44,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:52:44,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:52:44,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:52:44,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:52:44,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:52:44,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:52:44,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:52:44,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:52:44,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:52:44,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:52:44,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:52:44,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:52:44,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:52:44,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:52:44,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:52:44,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:52:44,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:52:44,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:52:44,587 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3309a0b9ddf6a439ec38f457e14947ace4c70ec [2020-11-29 22:52:44,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:52:45,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:52:45,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:52:45,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:52:45,010 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:52:45,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-11-29 22:52:45,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/47be97d8a/c4ba287634ad42c49a65e51b48e6f070/FLAGc5e722aa7 [2020-11-29 22:52:45,640 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:52:45,640 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2020-11-29 22:52:45,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/47be97d8a/c4ba287634ad42c49a65e51b48e6f070/FLAGc5e722aa7 [2020-11-29 22:52:46,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/data/47be97d8a/c4ba287634ad42c49a65e51b48e6f070 [2020-11-29 22:52:46,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:52:46,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:52:46,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:46,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:52:46,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:52:46,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20975a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46, skipping insertion in model container [2020-11-29 22:52:46,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:52:46,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:52:46,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:46,251 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:52:46,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:52:46,363 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:52:46,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46 WrapperNode [2020-11-29 22:52:46,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:52:46,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:46,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:52:46,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:52:46,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:52:46,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:52:46,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:52:46,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:52:46,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... [2020-11-29 22:52:46,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:52:46,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:52:46,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:52:46,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:52:46,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:52:46,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 22:52:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 22:52:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:52:46,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:52:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 22:52:46,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:52:46,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:52:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 22:52:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:53:09,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:53:09,623 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 22:53:09,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:09 BoogieIcfgContainer [2020-11-29 22:53:09,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:53:09,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:53:09,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:53:09,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:53:09,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:52:46" (1/3) ... [2020-11-29 22:53:09,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4781349e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:53:09, skipping insertion in model container [2020-11-29 22:53:09,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:52:46" (2/3) ... [2020-11-29 22:53:09,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4781349e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:53:09, skipping insertion in model container [2020-11-29 22:53:09,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:09" (3/3) ... [2020-11-29 22:53:09,635 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2020-11-29 22:53:09,649 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:53:09,655 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:53:09,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:53:09,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:53:09,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:53:09,694 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:53:09,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:53:09,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:53:09,695 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:53:09,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:53:09,696 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:53:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-29 22:53:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:53:09,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:09,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:53:09,724 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2020-11-29 22:53:09,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:53:09,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706206557] [2020-11-29 22:53:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:53:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:53:11,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 22:53:11,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:53:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:11,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:53:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:11,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706206557] [2020-11-29 22:53:11,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:53:11,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 22:53:11,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985632139] [2020-11-29 22:53:11,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 22:53:11,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:53:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 22:53:11,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 22:53:11,228 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-29 22:53:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:53:11,246 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-11-29 22:53:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 22:53:11,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 22:53:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:53:11,258 INFO L225 Difference]: With dead ends: 57 [2020-11-29 22:53:11,258 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 22:53:11,261 INFO L677 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 [2020-11-29 22:53:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 22:53:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 22:53:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:53:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-11-29 22:53:11,296 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2020-11-29 22:53:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:53:11,296 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-29 22:53:11,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 22:53:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-11-29 22:53:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:53:11,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:11,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:53:11,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:53:11,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:11,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:11,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2020-11-29 22:53:11,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:53:11,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866017916] [2020-11-29 22:53:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:53:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:53:12,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 22:53:12,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:53:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:12,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:53:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:13,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866017916] [2020-11-29 22:53:13,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:53:13,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 22:53:13,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024975909] [2020-11-29 22:53:13,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 22:53:13,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:53:13,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 22:53:13,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 22:53:13,110 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2020-11-29 22:53:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:53:20,915 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-29 22:53:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:53:21,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 22:53:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:53:21,610 INFO L225 Difference]: With dead ends: 41 [2020-11-29 22:53:21,611 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 22:53:21,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:53:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 22:53:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-11-29 22:53:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:53:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2020-11-29 22:53:21,619 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 11 [2020-11-29 22:53:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:53:21,619 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2020-11-29 22:53:21,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 22:53:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2020-11-29 22:53:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:53:21,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:53:21,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:53:21,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:53:21,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:53:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:53:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash -594923761, now seen corresponding path program 1 times [2020-11-29 22:53:21,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:53:21,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338649830] [2020-11-29 22:53:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:53:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:53:22,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 22:53:22,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:53:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:22,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:53:23,049 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 22:53:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:53:23,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338649830] [2020-11-29 22:53:23,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:53:23,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 22:53:23,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697549250] [2020-11-29 22:53:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 22:53:23,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:53:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 22:53:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:53:23,067 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 10 states. [2020-11-29 22:54:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:08,912 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-11-29 22:54:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:54:08,913 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-29 22:54:08,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:08,914 INFO L225 Difference]: With dead ends: 36 [2020-11-29 22:54:08,914 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:54:08,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 22:54:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:54:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-11-29 22:54:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:54:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-29 22:54:08,920 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2020-11-29 22:54:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:08,921 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-29 22:54:08,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 22:54:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-29 22:54:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:54:08,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:08,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:09,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:54:09,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 464451163, now seen corresponding path program 1 times [2020-11-29 22:54:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:54:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144477770] [2020-11-29 22:54:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:54:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:09,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:54:09,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:09,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:54:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:13,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144477770] [2020-11-29 22:54:13,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:13,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 22:54:13,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633915653] [2020-11-29 22:54:13,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:54:13,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:54:13,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:54:13,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=35, Unknown=2, NotChecked=0, Total=56 [2020-11-29 22:54:13,729 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-11-29 22:54:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:18,369 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-11-29 22:54:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:54:19,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-29 22:54:19,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:19,110 INFO L225 Difference]: With dead ends: 47 [2020-11-29 22:54:19,111 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 22:54:19,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=41, Invalid=67, Unknown=2, NotChecked=0, Total=110 [2020-11-29 22:54:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 22:54:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-11-29 22:54:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 22:54:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-29 22:54:19,119 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2020-11-29 22:54:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:19,119 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-29 22:54:19,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:54:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-29 22:54:19,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 22:54:19,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:54:19,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:54:19,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:54:19,320 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:54:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:54:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2124593878, now seen corresponding path program 1 times [2020-11-29 22:54:19,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:54:19,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966057507] [2020-11-29 22:54:19,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/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 [2020-11-29 22:54:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:54:19,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:54:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:54:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:19,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:54:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:54:20,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966057507] [2020-11-29 22:54:20,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:54:20,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 22:54:20,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112841230] [2020-11-29 22:54:20,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:54:20,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:54:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:54:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 22:54:20,016 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 8 states. [2020-11-29 22:54:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:54:20,226 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-11-29 22:54:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:54:20,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-29 22:54:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:54:20,227 INFO L225 Difference]: With dead ends: 26 [2020-11-29 22:54:20,228 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:54:20,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 22:54:20,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:54:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:54:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:54:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:54:20,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-29 22:54:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:54:20,229 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:54:20,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:54:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:54:20,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:54:20,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 22:54:20,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:54:20,578 INFO L274 CegarLoopResult]: For program point L60(lines 60 72) no Hoare annotation was computed. [2020-11-29 22:54:20,578 INFO L274 CegarLoopResult]: For program point L60-1(lines 47 126) no Hoare annotation was computed. [2020-11-29 22:54:20,578 INFO L274 CegarLoopResult]: For program point L52-1(lines 52 57) no Hoare annotation was computed. [2020-11-29 22:54:20,578 INFO L270 CegarLoopResult]: At program point L52-2(lines 52 57) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x))) [2020-11-29 22:54:20,578 INFO L274 CegarLoopResult]: For program point L52-3(lines 52 57) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L61(lines 61 62) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L86(lines 86 102) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L115(lines 115 119) no Hoare annotation was computed. [2020-11-29 22:54:20,579 INFO L274 CegarLoopResult]: For program point L78-1(lines 78 83) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L270 CegarLoopResult]: At program point L78-2(lines 78 83) the Hoare annotation is: false [2020-11-29 22:54:20,580 INFO L274 CegarLoopResult]: For program point L78-3(lines 78 83) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L270 CegarLoopResult]: At program point L124(lines 47 126) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log_#res|)) [2020-11-29 22:54:20,580 INFO L274 CegarLoopResult]: For program point L87(lines 87 94) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L274 CegarLoopResult]: For program point L141(lines 141 144) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L274 CegarLoopResult]: For program point L67-1(lines 67 71) no Hoare annotation was computed. [2020-11-29 22:54:20,580 INFO L270 CegarLoopResult]: At program point L67-2(lines 67 71) the Hoare annotation is: false [2020-11-29 22:54:20,580 INFO L270 CegarLoopResult]: At program point L129(line 129) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start___ieee754_log_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start___ieee754_log_#res|)) [2020-11-29 22:54:20,594 INFO L274 CegarLoopResult]: For program point L96(lines 96 101) no Hoare annotation was computed. [2020-11-29 22:54:20,594 INFO L274 CegarLoopResult]: For program point L63(lines 63 64) no Hoare annotation was computed. [2020-11-29 22:54:20,594 INFO L274 CegarLoopResult]: For program point L121(lines 121 124) no Hoare annotation was computed. [2020-11-29 22:54:20,594 INFO L274 CegarLoopResult]: For program point L88(lines 88 93) no Hoare annotation was computed. [2020-11-29 22:54:20,595 INFO L277 CegarLoopResult]: At program point L146(lines 131 147) the Hoare annotation is: true [2020-11-29 22:54:20,595 INFO L274 CegarLoopResult]: For program point L113(lines 113 125) no Hoare annotation was computed. [2020-11-29 22:54:20,603 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,604 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,604 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,605 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,606 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,607 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,612 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,612 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,612 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,613 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,613 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,613 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,614 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,615 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,615 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,615 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,615 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,615 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,617 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,617 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,617 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,618 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,618 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 22:54:20,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,619 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,619 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 22:54:20,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:54:20 BoogieIcfgContainer [2020-11-29 22:54:20,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:54:20,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:54:20,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:54:20,622 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:54:20,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:53:09" (3/4) ... [2020-11-29 22:54:20,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:54:20,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 22:54:20,643 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 22:54:20,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:54:20,644 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:54:20,672 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-29 22:54:20,673 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-29 22:54:20,674 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-29 22:54:20,736 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cb762da9-6bb0-47b6-98e2-961215f31244/bin/uautomizer/witness.graphml [2020-11-29 22:54:20,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:54:20,738 INFO L168 Benchmark]: Toolchain (without parser) took 94727.05 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 37.8 MB in the beginning and 47.2 MB in the end (delta: -9.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,739 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:54:20,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.75 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 40.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.91 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,740 INFO L168 Benchmark]: Boogie Preprocessor took 77.29 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 36.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,741 INFO L168 Benchmark]: RCFGBuilder took 23101.78 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 42.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,741 INFO L168 Benchmark]: TraceAbstraction took 70994.62 ms. Allocated memory is still 73.4 MB. Free memory was 42.2 MB in the beginning and 52.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,741 INFO L168 Benchmark]: Witness Printer took 114.72 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 47.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:54:20,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.75 ms. Allocated memory is still 58.7 MB. Free memory was 37.6 MB in the beginning and 40.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.91 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 38.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.29 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 36.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 23101.78 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 36.2 MB in the beginning and 42.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 70994.62 ms. Allocated memory is still 73.4 MB. Free memory was 42.2 MB in the beginning and 52.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 114.72 ms. Allocated memory is still 73.4 MB. Free memory was 52.5 MB in the beginning and 47.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 129]: Loop Invariant [2020-11-29 22:54:20,757 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,758 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,758 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,758 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,758 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,760 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,760 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,760 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,761 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,761 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,761 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant [2020-11-29 22:54:20,764 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,765 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,765 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,765 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,765 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,765 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,766 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~DOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~DOUBLE(~roundNearestTiesToEven, ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~DOUBLE(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant [2020-11-29 22:54:20,774 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,774 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 22:54:20,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:54:20,775 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:54:20,775 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 22:54:20,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 70.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 60.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 118 SDslu, 292 SDs, 0 SdLazy, 127 SolverSat, 22 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 55.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 23 QuantifiedInterpolants, 9392 SizeOfPredicates, 31 NumberOfNonLiveVariables, 343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...