./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.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_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b ......................................................................................................................................................................................................................................................................................... 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_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b ....................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:42:47,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:42:47,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:42:47,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:42:47,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:42:47,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:42:47,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:42:47,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:42:47,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:42:47,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:42:47,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:42:47,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:42:47,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:42:47,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:42:47,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:42:47,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:42:47,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:42:47,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:42:47,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:42:47,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:42:47,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:42:47,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:42:47,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:42:47,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:42:47,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:42:47,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:42:47,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:42:47,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:42:47,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:42:47,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:42:47,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:42:47,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:42:47,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:42:47,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:42:47,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:42:47,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:42:47,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:42:47,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:42:47,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:42:47,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:42:47,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:42:47,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:42:47,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:42:47,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:42:47,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:42:47,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:42:47,550 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:42:47,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:42:47,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:42:47,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:42:47,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:42:47,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:42:47,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:42:47,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:42:47,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:42:47,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:42:47,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:42:47,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:42:47,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:42:47,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:42:47,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:42:47,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:42:47,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:42:47,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:42:47,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:42:47,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:42:47,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:42:47,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:42:47,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:42:47,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:42:47,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:42:47,557 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_1cf14993-b901-44e3-bd9f-2914d76f45cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2020-11-29 20:42:47,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:42:47,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:42:47,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:42:47,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:42:47,971 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:42:47,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-29 20:42:48,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/209cb4ab5/937395615c3743ddba9f79891e352305/FLAG3f1d2c788 [2020-11-29 20:42:48,646 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:42:48,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-29 20:42:48,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/209cb4ab5/937395615c3743ddba9f79891e352305/FLAG3f1d2c788 [2020-11-29 20:42:49,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/209cb4ab5/937395615c3743ddba9f79891e352305 [2020-11-29 20:42:49,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:42:49,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:42:49,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:42:49,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:42:49,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:42:49,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64167ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49, skipping insertion in model container [2020-11-29 20:42:49,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:42:49,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:42:49,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:42:49,261 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:42:49,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:42:49,306 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:42:49,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49 WrapperNode [2020-11-29 20:42:49,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:42:49,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:42:49,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:42:49,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:42:49,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:42:49,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:42:49,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:42:49,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:42:49,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... [2020-11-29 20:42:49,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:42:49,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:42:49,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:42:49,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:42:49,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 20:42:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:42:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:42:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 20:42:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:42:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 20:42:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:42:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:42:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:42:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:42:49,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:42:49,764 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 20:42:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:49 BoogieIcfgContainer [2020-11-29 20:42:49,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:42:49,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:42:49,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:42:49,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:42:49,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:42:49" (1/3) ... [2020-11-29 20:42:49,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431992e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:42:49, skipping insertion in model container [2020-11-29 20:42:49,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:49" (2/3) ... [2020-11-29 20:42:49,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431992e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:42:49, skipping insertion in model container [2020-11-29 20:42:49,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:49" (3/3) ... [2020-11-29 20:42:49,789 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2020-11-29 20:42:49,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:42:49,821 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:42:49,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:42:49,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:42:49,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:42:49,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:42:49,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:42:49,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:42:49,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:42:49,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:42:49,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:42:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-29 20:42:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:42:49,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:42:49,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:42:49,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:42:49,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:42:49,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-29 20:42:49,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:42:49,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511667389] [2020-11-29 20:42:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:42:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:42:50,063 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 20:42:50,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511667389] [2020-11-29 20:42:50,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:42:50,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:42:50,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723854228] [2020-11-29 20:42:50,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:42:50,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:42:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:42:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:42:50,090 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-29 20:42:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:42:50,107 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-29 20:42:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:42:50,108 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 20:42:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:42:50,118 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:42:50,118 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 20:42:50,121 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 20:42:50,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 20:42:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 20:42:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:42:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-29 20:42:50,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-29 20:42:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:42:50,155 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-29 20:42:50,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:42:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-29 20:42:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:42:50,156 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:42:50,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:42:50,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:42:50,157 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:42:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:42:50,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-29 20:42:50,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:42:50,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118033966] [2020-11-29 20:42:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:42:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:42:50,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:42:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:42:50,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:42:50,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:42:50,263 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:42:50,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:42:50,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:42:50 BoogieIcfgContainer [2020-11-29 20:42:50,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:42:50,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:42:50,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:42:50,291 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:42:50,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:49" (3/4) ... [2020-11-29 20:42:50,296 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:42:50,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:42:50,299 INFO L168 Benchmark]: Toolchain (without parser) took 1267.34 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 40.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:50,299 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:42:50,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.10 ms. Allocated memory is still 86.0 MB. Free memory was 62.4 MB in the beginning and 52.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:50,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 86.0 MB. Free memory was 52.5 MB in the beginning and 51.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:42:50,302 INFO L168 Benchmark]: Boogie Preprocessor took 28.83 ms. Allocated memory is still 86.0 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:50,303 INFO L168 Benchmark]: RCFGBuilder took 386.64 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 62.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:50,304 INFO L168 Benchmark]: TraceAbstraction took 521.91 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 40.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:42:50,305 INFO L168 Benchmark]: Witness Printer took 5.56 ms. Allocated memory is still 86.0 MB. Free memory was 40.8 MB in the beginning and 40.4 MB in the end (delta: 394.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:42:50,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory is still 66.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.10 ms. Allocated memory is still 86.0 MB. Free memory was 62.4 MB in the beginning and 52.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.94 ms. Allocated memory is still 86.0 MB. Free memory was 52.5 MB in the beginning and 51.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.83 ms. Allocated memory is still 86.0 MB. Free memory was 50.9 MB in the beginning and 49.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 386.64 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 62.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 521.91 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 40.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.56 ms. Allocated memory is still 86.0 MB. Free memory was 40.8 MB in the beginning and 40.4 MB in the end (delta: 394.7 kB). 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 someBinaryFLOATComparisonOperation at line 52, overapproximation of someBinaryDOUBLEComparisonOperation at line 52, overapproximation of someBinaryArithmeticFLOAToperation at line 22. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_sqrt_Quake.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 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=13occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 20:42:53,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:42:53,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:42:53,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:42:53,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:42:53,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:42:53,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:42:53,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:42:53,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:42:53,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:42:53,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:42:53,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:42:53,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:42:53,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:42:53,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:42:53,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:42:53,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:42:53,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:42:53,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:42:53,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:42:53,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:42:53,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:42:53,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:42:53,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:42:53,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:42:53,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:42:53,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:42:53,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:42:53,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:42:53,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:42:53,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:42:53,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:42:53,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:42:53,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:42:53,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:42:53,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:42:53,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:42:53,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:42:53,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:42:53,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:42:53,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:42:53,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:42:53,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:42:53,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:42:53,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:42:53,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:42:53,393 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:42:53,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:42:53,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:42:53,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:42:53,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:42:53,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:42:53,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:42:53,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:42:53,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:42:53,397 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:42:53,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:42:53,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:42:53,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:42:53,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:42:53,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:42:53,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:42:53,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:42:53,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:42:53,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:42:53,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:42:53,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:42:53,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:42:53,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:42:53,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:42:53,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:42:53,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:42:53,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:42:53,402 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_1cf14993-b901-44e3-bd9f-2914d76f45cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a9a5f04ffebcbeddfcdcc0054cf362a3fa4d7b [2020-11-29 20:42:53,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:42:53,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:42:53,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:42:53,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:42:53,896 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:42:53,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-29 20:42:53,997 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/0e7676f5e/7d7712404969410fa0c3ec47217034b0/FLAG6ad2cb4fe [2020-11-29 20:42:54,675 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:42:54,676 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c [2020-11-29 20:42:54,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/0e7676f5e/7d7712404969410fa0c3ec47217034b0/FLAG6ad2cb4fe [2020-11-29 20:42:55,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/data/0e7676f5e/7d7712404969410fa0c3ec47217034b0 [2020-11-29 20:42:55,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:42:55,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:42:55,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:42:55,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:42:55,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:42:55,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c4e4152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55, skipping insertion in model container [2020-11-29 20:42:55,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:42:55,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:42:55,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:42:55,334 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:42:55,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:42:55,437 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:42:55,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55 WrapperNode [2020-11-29 20:42:55,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:42:55,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:42:55,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:42:55,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:42:55,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:42:55,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:42:55,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:42:55,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:42:55,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... [2020-11-29 20:42:55,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:42:55,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:42:55,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:42:55,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:42:55,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 20:42:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:42:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:42:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 20:42:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:42:55,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:42:55,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:42:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 20:42:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:42:55,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:42:58,259 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:42:58,260 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 20:42:58,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:58 BoogieIcfgContainer [2020-11-29 20:42:58,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:42:58,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:42:58,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:42:58,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:42:58,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:42:55" (1/3) ... [2020-11-29 20:42:58,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b966d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:42:58, skipping insertion in model container [2020-11-29 20:42:58,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:42:55" (2/3) ... [2020-11-29 20:42:58,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b966d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:42:58, skipping insertion in model container [2020-11-29 20:42:58,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:58" (3/3) ... [2020-11-29 20:42:58,272 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c [2020-11-29 20:42:58,284 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:42:58,289 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:42:58,303 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:42:58,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:42:58,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:42:58,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:42:58,333 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:42:58,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:42:58,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:42:58,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:42:58,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:42:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-29 20:42:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:42:58,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:42:58,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:42:58,353 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:42:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:42:58,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965382, now seen corresponding path program 1 times [2020-11-29 20:42:58,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:42:58,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049986473] [2020-11-29 20:42:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 20:42:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:42:58,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:42:58,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:42:58,886 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 20:42:58,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:42:58,890 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 20:42:58,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049986473] [2020-11-29 20:42:58,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:42:58,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:42:58,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649273676] [2020-11-29 20:42:58,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:42:58,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:42:58,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:42:58,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:42:58,916 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-29 20:42:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:42:58,931 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-29 20:42:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:42:58,932 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 20:42:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:42:58,940 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:42:58,941 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 20:42:58,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 20:42:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 20:42:58,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 20:42:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:42:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-11-29 20:42:58,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2020-11-29 20:42:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:42:58,978 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-11-29 20:42:58,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:42:58,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-11-29 20:42:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 20:42:58,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:42:58,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:42:59,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:42:59,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:42:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:42:59,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812424, now seen corresponding path program 1 times [2020-11-29 20:42:59,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:42:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954521745] [2020-11-29 20:42:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/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 20:43:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:43:01,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 20:43:01,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:43:01,675 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:43:03,831 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 8 24) c_currentRoundingMode 100.0)) (fp.geq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 10.0))) (= (let ((.cse1 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 3.0 2.0)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) .cse1) .cse1)))) |c_ULTIMATE.start_InvSqrt_#res|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2020-11-29 20:43:03,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:43:05,907 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:43:20,343 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) .cse3) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse5 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (let ((.cse4 (let ((.cse6 (let ((.cse7 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (fp.mul roundNearestTiesToEven .cse6 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse5) .cse6) .cse6)))))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse4) ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.geq .cse4 (_ +zero 8 24)) (fp.leq .cse5 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))))) (and .cse3 (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse8 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.geq .cse8 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse9 (let ((.cse10 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse10) ((_ extract 30 23) .cse10) ((_ extract 22 0) .cse10))))) (fp.mul roundNearestTiesToEven .cse9 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse8) .cse9) .cse9))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse8 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)))))))) is different from false [2020-11-29 20:43:30,610 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) (exists ((v_prenex_1 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_1) ((_ extract 30 23) v_prenex_1) ((_ extract 22 0) v_prenex_1)))) (and (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse3 (let ((.cse5 (bvadd (bvneg (bvashr v_prenex_1 (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse4) .cse3) .cse3))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (fp.geq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))))))) is different from false [2020-11-29 20:43:32,696 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (not (fp.geq (let ((.cse0 (let ((.cse2 (bvadd (bvneg (bvashr |v_skolemized_q#valueAsBitvector_3| (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2))))) (fp.mul roundNearestTiesToEven .cse0 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse1) .cse0) .cse0)))) (_ +zero 8 24))) (fp.geq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))) (fp.leq .cse1 ((_ to_fp 8 24) roundNearestTiesToEven 100.0))))) (exists ((v_prenex_1 (_ BitVec 32))) (let ((.cse4 (fp ((_ extract 31 31) v_prenex_1) ((_ extract 30 23) v_prenex_1) ((_ extract 22 0) v_prenex_1)))) (and (not (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven (let ((.cse3 (let ((.cse5 (bvadd (bvneg (bvashr v_prenex_1 (_ bv1 32))) (_ bv1597463007 32)))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5))))) (fp.mul roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) .cse4) .cse3) .cse3))))) ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (fp.leq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven 100.0)) (fp.geq .cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 10.0))))))) is different from true [2020-11-29 20:43:32,700 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 20:43:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:43:33,411 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-29 20:43:33,420 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 20:43:43,028 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 20:43:43,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954521745] [2020-11-29 20:43:43,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-29 20:43:43,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [359934211] [2020-11-29 20:43:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 20:43:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:43:44,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 20:43:44,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@4c2300bc [2020-11-29 20:43:44,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638665935] [2020-11-29 20:43:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1cf14993-b901-44e3-bd9f-2914d76f45cb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:44:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:44:26,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:44:26,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@4c2300bc [2020-11-29 20:44:26,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:44:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-29 20:44:26,025 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-29 20:44:26,025 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:44:26,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:44:26,649 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-29 20:44:26,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:44:26 BoogieIcfgContainer [2020-11-29 20:44:26,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:44:26,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:44:26,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:44:26,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:44:26,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:42:58" (3/4) ... [2020-11-29 20:44:26,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:44:26,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:44:26,660 INFO L168 Benchmark]: Toolchain (without parser) took 91613.40 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 58.7 MB in the beginning and 49.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,662 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:44:26,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.97 ms. Allocated memory is still 73.4 MB. Free memory was 58.7 MB in the beginning and 57.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.43 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:44:26,668 INFO L168 Benchmark]: Boogie Preprocessor took 54.53 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 53.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,670 INFO L168 Benchmark]: RCFGBuilder took 2689.96 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 40.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,672 INFO L168 Benchmark]: TraceAbstraction took 88386.26 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 40.0 MB in the beginning and 50.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,681 INFO L168 Benchmark]: Witness Printer took 6.75 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 49.8 MB in the end (delta: 572.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:44:26,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.97 ms. Allocated memory is still 73.4 MB. Free memory was 58.7 MB in the beginning and 57.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.43 ms. Allocated memory is still 73.4 MB. Free memory was 56.7 MB in the beginning and 55.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.53 ms. Allocated memory is still 73.4 MB. Free memory was 55.3 MB in the beginning and 53.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2689.96 ms. Allocated memory is still 73.4 MB. Free memory was 53.9 MB in the beginning and 40.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 88386.26 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 40.0 MB in the beginning and 50.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.75 ms. Allocated memory is still 88.1 MB. Free memory was 50.3 MB in the beginning and 49.8 MB in the end (delta: 572.8 kB). Peak memory consumption was 2.1 MB. 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L45] float a,r; [L47] a = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] float xhalf = 0.5f*x; [L23] union float_int i; [L24] i.f = x [L25] EXPR i.i [L25] i.i = 0x5f3759df - (i.i>>1) [L26] EXPR i.f [L26] x = i.f [L27] x = x*(1.5f-xhalf*x*x) [L28] return x; [L28] return x; [L50] r = InvSqrt(a) [L13] COND TRUE !(cond) [L3] __assert_fail("0", "inv_sqrt_Quake.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 88.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...