./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 15:31:34,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:31:34,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:31:34,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:31:34,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:31:34,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:31:34,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:31:34,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:31:34,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:31:34,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:31:34,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:31:34,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:31:34,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:31:34,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:31:34,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:31:34,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:31:34,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:31:34,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:31:34,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:31:34,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:31:34,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:31:34,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:31:34,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:31:34,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:31:34,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:31:34,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:31:34,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:31:34,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:31:34,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:31:34,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:31:34,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:31:34,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:31:34,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:31:34,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:31:34,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:31:34,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:31:34,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:31:34,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:31:34,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:31:34,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:31:34,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:31:34,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:31:34,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:31:34,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:31:34,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:31:34,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:31:34,510 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:31:34,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:31:34,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:31:34,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:31:34,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:31:34,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:31:34,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:31:34,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:31:34,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:31:34,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:31:34,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:31:34,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:31:34,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:31:34,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:31:34,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:31:34,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:31:34,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:31:34,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:31:34,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:31:34,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:31:34,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:31:34,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:31:34,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:31:34,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:31:34,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:31:34,520 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2020-12-02 15:31:35,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:31:35,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:31:35,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:31:35,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:31:35,060 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:31:35,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-12-02 15:31:35,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f92156dc/71dedb8cf65f4ef4a431c1e49f62d41d/FLAGcdd02c91a [2020-12-02 15:31:35,717 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:31:35,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-12-02 15:31:35,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f92156dc/71dedb8cf65f4ef4a431c1e49f62d41d/FLAGcdd02c91a [2020-12-02 15:31:36,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f92156dc/71dedb8cf65f4ef4a431c1e49f62d41d [2020-12-02 15:31:36,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:31:36,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:31:36,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:31:36,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:31:36,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:31:36,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d9f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36, skipping insertion in model container [2020-12-02 15:31:36,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,134 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:31:36,167 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:31:36,382 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c[2407,2420] [2020-12-02 15:31:36,386 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:31:36,399 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:31:36,443 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c[2407,2420] [2020-12-02 15:31:36,444 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:31:36,472 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:31:36,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36 WrapperNode [2020-12-02 15:31:36,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:31:36,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:31:36,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:31:36,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:31:36,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:31:36,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:31:36,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:31:36,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:31:36,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... [2020-12-02 15:31:36,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:31:36,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:31:36,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:31:36,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:31:36,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:31:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:31:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:31:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:31:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:31:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:31:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:31:36,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:31:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:31:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:31:37,306 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:31:37,306 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:31:37,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:37 BoogieIcfgContainer [2020-12-02 15:31:37,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:31:37,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:31:37,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:31:37,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:31:37,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:31:36" (1/3) ... [2020-12-02 15:31:37,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62afada8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:37, skipping insertion in model container [2020-12-02 15:31:37,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:36" (2/3) ... [2020-12-02 15:31:37,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62afada8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:37, skipping insertion in model container [2020-12-02 15:31:37,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:37" (3/3) ... [2020-12-02 15:31:37,334 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-12-02 15:31:37,357 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:31:37,362 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:31:37,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:31:37,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:31:37,414 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:31:37,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:31:37,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:31:37,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:31:37,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:31:37,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:31:37,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:31:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-02 15:31:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:31:37,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:31:37,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:31:37,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:31:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:31:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2020-12-02 15:31:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:31:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47013080] [2020-12-02 15:31:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:31:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:31:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:37,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47013080] [2020-12-02 15:31:37,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:31:37,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:31:37,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190561265] [2020-12-02 15:31:37,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:31:37,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:31:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:31:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:31:37,648 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-02 15:31:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:31:37,675 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2020-12-02 15:31:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:31:37,676 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:31:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:31:37,688 INFO L225 Difference]: With dead ends: 72 [2020-12-02 15:31:37,688 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 15:31:37,691 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 [2020-12-02 15:31:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 15:31:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-02 15:31:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-02 15:31:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-12-02 15:31:37,733 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2020-12-02 15:31:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:31:37,734 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-12-02 15:31:37,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:31:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-12-02 15:31:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:31:37,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:31:37,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:31:37,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:31:37,736 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:31:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:31:37,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2020-12-02 15:31:37,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:31:37,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751837303] [2020-12-02 15:31:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:31:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:31:37,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:31:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:31:37,976 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:31:38,012 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:31:38,012 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:31:38,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:31:38,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:31:38 BoogieIcfgContainer [2020-12-02 15:31:38,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:31:38,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:31:38,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:31:38,085 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:31:38,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:37" (3/4) ... [2020-12-02 15:31:38,091 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:31:38,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:31:38,098 INFO L168 Benchmark]: Toolchain (without parser) took 1985.51 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.4 MB in the beginning and 31.0 MB in the end (delta: -12.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:31:38,099 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:31:38,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.55 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 18.2 MB in the end (delta: -90.0 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:31:38,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.69 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.2 MB in the beginning and 34.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:31:38,103 INFO L168 Benchmark]: Boogie Preprocessor took 39.02 ms. Allocated memory is still 50.3 MB. Free memory was 34.4 MB in the beginning and 32.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:31:38,106 INFO L168 Benchmark]: RCFGBuilder took 716.08 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 21.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:31:38,107 INFO L168 Benchmark]: TraceAbstraction took 760.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 31.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:31:38,109 INFO L168 Benchmark]: Witness Printer took 7.02 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.0 MB in the end (delta: 313.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:31:38,119 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.55 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 18.2 MB in the end (delta: -90.0 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.69 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.2 MB in the beginning and 34.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.02 ms. Allocated memory is still 50.3 MB. Free memory was 34.4 MB in the beginning and 32.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 716.08 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 21.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 760.19 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 31.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.02 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.0 MB in the end (delta: 313.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 91, overapproximation of bitwiseAnd at line 90, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 103. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L103] double x = 1.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] double res = floor_double(x); [L83] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L107] COND TRUE !isinf_double(res) [L108] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 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=37occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 0.2.0-2880296 [2020-12-02 15:31:40,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:31:40,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:31:40,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:31:40,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:31:40,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:31:40,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:31:40,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:31:40,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:31:40,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:31:40,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:31:40,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:31:40,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:31:40,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:31:40,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:31:40,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:31:40,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:31:40,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:31:40,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:31:41,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:31:41,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:31:41,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:31:41,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:31:41,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:31:41,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:31:41,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:31:41,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:31:41,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:31:41,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:31:41,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:31:41,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:31:41,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:31:41,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:31:41,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:31:41,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:31:41,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:31:41,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:31:41,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:31:41,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:31:41,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:31:41,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:31:41,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:31:41,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:31:41,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:31:41,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:31:41,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:31:41,126 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:31:41,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:31:41,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:31:41,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:31:41,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:31:41,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:31:41,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:31:41,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:31:41,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:31:41,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:31:41,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:31:41,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:31:41,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:31:41,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:31:41,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:31:41,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:31:41,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:31:41,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:31:41,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:31:41,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:31:41,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:31:41,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:31:41,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:31:41,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:31:41,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:31:41,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:31:41,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:31:41,134 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48a71202a0e82b0e2ae39f845042f68e3a18e5b0 [2020-12-02 15:31:41,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:31:41,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:31:41,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:31:41,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:31:41,633 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:31:41,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-12-02 15:31:41,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865425966/ff843a9d25e74c2499abdffbb868dcfb/FLAGab29c7481 [2020-12-02 15:31:42,312 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:31:42,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-12-02 15:31:42,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865425966/ff843a9d25e74c2499abdffbb868dcfb/FLAGab29c7481 [2020-12-02 15:31:42,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865425966/ff843a9d25e74c2499abdffbb868dcfb [2020-12-02 15:31:42,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:31:42,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:31:42,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:31:42,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:31:42,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:31:42,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:42" (1/1) ... [2020-12-02 15:31:42,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a92b33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:42, skipping insertion in model container [2020-12-02 15:31:42,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:31:42" (1/1) ... [2020-12-02 15:31:42,758 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:31:42,835 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:31:43,134 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c[2407,2420] [2020-12-02 15:31:43,138 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:31:43,156 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:31:43,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c[2407,2420] [2020-12-02 15:31:43,196 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:31:43,225 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:31:43,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43 WrapperNode [2020-12-02 15:31:43,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:31:43,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:31:43,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:31:43,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:31:43,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:31:43,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:31:43,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:31:43,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:31:43,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... [2020-12-02 15:31:43,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:31:43,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:31:43,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:31:43,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:31:43,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:31:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:31:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:31:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:31:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:31:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:31:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:31:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:31:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:31:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:31:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:31:44,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:31:44,795 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:31:44,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:44 BoogieIcfgContainer [2020-12-02 15:31:44,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:31:44,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:31:44,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:31:44,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:31:44,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:31:42" (1/3) ... [2020-12-02 15:31:44,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c611013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:44, skipping insertion in model container [2020-12-02 15:31:44,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:31:43" (2/3) ... [2020-12-02 15:31:44,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c611013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:31:44, skipping insertion in model container [2020-12-02 15:31:44,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:44" (3/3) ... [2020-12-02 15:31:44,809 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-12-02 15:31:44,826 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:31:44,830 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:31:44,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:31:44,879 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:31:44,880 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:31:44,880 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:31:44,880 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:31:44,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:31:44,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:31:44,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:31:44,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:31:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-02 15:31:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:31:44,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:31:44,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:31:44,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:31:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:31:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2020-12-02 15:31:44,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:31:44,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552888502] [2020-12-02 15:31:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:31:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:31:45,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:31:45,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:31:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:45,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:31:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:45,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552888502] [2020-12-02 15:31:45,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:31:45,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:31:45,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336831187] [2020-12-02 15:31:45,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:31:45,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:31:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:31:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:31:45,946 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-02 15:31:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:31:45,980 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2020-12-02 15:31:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:31:45,983 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:31:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:31:45,997 INFO L225 Difference]: With dead ends: 72 [2020-12-02 15:31:45,998 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 15:31:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:31:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 15:31:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-02 15:31:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-02 15:31:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-12-02 15:31:46,042 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2020-12-02 15:31:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:31:46,042 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-12-02 15:31:46,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:31:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-12-02 15:31:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:31:46,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:31:46,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:31:46,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:31:46,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:31:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:31:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2020-12-02 15:31:46,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:31:46,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427541226] [2020-12-02 15:31:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:31:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:31:47,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 15:31:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:31:49,308 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~nondet26_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_6|)))) (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) (= (_ +zero 11 53) .cse1) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_floor_double_~x) ((_ extract 62 52) c_ULTIMATE.start_floor_double_~x) ((_ extract 51 0) c_ULTIMATE.start_floor_double_~x)))))) is different from false [2020-12-02 15:31:55,108 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 15:31:57,309 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_floor_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet26_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_6|)))) (and (= (bvadd c_ULTIMATE.start_floor_double_~j0~0 (_ bv1023 32)) (bvand (_ bv2047 32) (bvashr ((_ extract 63 32) ULTIMATE.start_floor_double_~x) (_ bv20 32)))) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) (= (_ +zero 11 53) .cse1) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_floor_double_~x) ((_ extract 62 52) ULTIMATE.start_floor_double_~x) ((_ extract 51 0) ULTIMATE.start_floor_double_~x)))))) is different from false [2020-12-02 15:31:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:57,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:32:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:32:04,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427541226] [2020-12-02 15:32:04,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:04,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 15:32:04,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468460535] [2020-12-02 15:32:04,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 15:32:04,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:32:04,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 15:32:04,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=31, Unknown=3, NotChecked=22, Total=72 [2020-12-02 15:32:04,761 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 9 states. [2020-12-02 15:32:06,936 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet26_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_6|)))) (and (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) (= (_ +zero 11 53) .cse1) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_floor_double_~x) ((_ extract 62 52) c_ULTIMATE.start_floor_double_~x) ((_ extract 51 0) c_ULTIMATE.start_floor_double_~x)))))) (not (bvslt (bvadd (bvand (_ bv2047 32) (bvashr ((_ extract 63 32) c_ULTIMATE.start_floor_double_~x) (_ bv20 32))) (_ bv4294966273 32)) (_ bv20 32)))) is different from false [2020-12-02 15:32:12,041 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_floor_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet26_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_6|)))) (and (= (bvadd c_ULTIMATE.start_floor_double_~j0~0 (_ bv1023 32)) (bvand (_ bv2047 32) (bvashr ((_ extract 63 32) ULTIMATE.start_floor_double_~x) (_ bv20 32)))) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) (= (_ +zero 11 53) .cse1) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_floor_double_~x) ((_ extract 62 52) ULTIMATE.start_floor_double_~x) ((_ extract 51 0) ULTIMATE.start_floor_double_~x)))))) (exists ((ULTIMATE.start_floor_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet26_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_6|)))) (and (= c_ULTIMATE.start_floor_double_~i0~0 ((_ extract 63 32) ULTIMATE.start_floor_double_~x)) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2) (= (_ +zero 11 53) .cse3) (= (fp.div roundNearestTiesToEven .cse2 .cse3) (fp ((_ extract 63 63) ULTIMATE.start_floor_double_~x) ((_ extract 62 52) ULTIMATE.start_floor_double_~x) ((_ extract 51 0) ULTIMATE.start_floor_double_~x)))))) (not (bvslt c_ULTIMATE.start_floor_double_~j0~0 (_ bv20 32)))) is different from false [2020-12-02 15:32:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:13,176 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-12-02 15:32:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 15:32:13,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-02 15:32:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:13,178 INFO L225 Difference]: With dead ends: 57 [2020-12-02 15:32:13,178 INFO L226 Difference]: Without dead ends: 38 [2020-12-02 15:32:13,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=20, Invalid=33, Unknown=5, NotChecked=52, Total=110 [2020-12-02 15:32:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-02 15:32:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-12-02 15:32:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 15:32:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-12-02 15:32:13,186 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2020-12-02 15:32:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:13,187 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-12-02 15:32:13,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 15:32:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-12-02 15:32:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:32:13,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:13,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:13,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:32:13,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1129837443, now seen corresponding path program 1 times [2020-12-02 15:32:13,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:13,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289080400] [2020-12-02 15:32:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:32:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 15:32:14,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:32:16,446 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~nondet26_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_8|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_8|)))) (and (= (_ +zero 11 53) .cse0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) (= (fp ((_ extract 63 63) c_ULTIMATE.start_floor_double_~x) ((_ extract 62 52) c_ULTIMATE.start_floor_double_~x) ((_ extract 51 0) c_ULTIMATE.start_floor_double_~x)) (fp.div roundNearestTiesToEven .cse1 .cse0))))) is different from false [2020-12-02 15:32:18,619 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_floor_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet26_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_8|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_8|)))) (and (= c_ULTIMATE.start_floor_double_~i0~0 ((_ extract 63 32) ULTIMATE.start_floor_double_~x)) (= (_ +zero 11 53) .cse0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) (= (fp ((_ extract 63 63) ULTIMATE.start_floor_double_~x) ((_ extract 62 52) ULTIMATE.start_floor_double_~x) ((_ extract 51 0) ULTIMATE.start_floor_double_~x)) (fp.div roundNearestTiesToEven .cse1 .cse0))))) is different from false [2020-12-02 15:32:24,774 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-02 15:32:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:32:24,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:32:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:32:31,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289080400] [2020-12-02 15:32:31,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:31,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 15:32:31,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349879853] [2020-12-02 15:32:31,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 15:32:31,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:32:31,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 15:32:31,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=31, Unknown=3, NotChecked=22, Total=72 [2020-12-02 15:32:31,509 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 9 states. [2020-12-02 15:32:33,689 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_#t~nondet26_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_8|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_8|)))) (and (= (_ +zero 11 53) .cse0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) (= (fp ((_ extract 63 63) c_ULTIMATE.start_floor_double_~x) ((_ extract 62 52) c_ULTIMATE.start_floor_double_~x) ((_ extract 51 0) c_ULTIMATE.start_floor_double_~x)) (fp.div roundNearestTiesToEven .cse1 .cse0))))) (= roundNearestTiesToEven c_~CRM) (bvsgt (bvadd (bvand (_ bv2047 32) (bvashr ((_ extract 63 32) c_ULTIMATE.start_floor_double_~x) (_ bv20 32))) (_ bv4294966273 32)) (_ bv51 32))) is different from false [2020-12-02 15:32:35,833 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_floor_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet26_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet25_8| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet25_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet25_8|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet26_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet26_8|)))) (and (= c_ULTIMATE.start_floor_double_~i0~0 ((_ extract 63 32) ULTIMATE.start_floor_double_~x)) (= (_ +zero 11 53) .cse0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) (= (fp ((_ extract 63 63) ULTIMATE.start_floor_double_~x) ((_ extract 62 52) ULTIMATE.start_floor_double_~x) ((_ extract 51 0) ULTIMATE.start_floor_double_~x)) (fp.div roundNearestTiesToEven .cse1 .cse0))))) (bvsgt (bvadd (bvand (_ bv2047 32) (bvashr c_ULTIMATE.start_floor_double_~i0~0 (_ bv20 32))) (_ bv4294966273 32)) (_ bv51 32))) is different from false [2020-12-02 15:32:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:58,913 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-12-02 15:32:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 15:32:59,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-02 15:32:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:59,160 INFO L225 Difference]: With dead ends: 42 [2020-12-02 15:32:59,160 INFO L226 Difference]: Without dead ends: 24 [2020-12-02 15:32:59,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=20, Invalid=33, Unknown=5, NotChecked=52, Total=110 [2020-12-02 15:32:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-02 15:32:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2020-12-02 15:32:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:32:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-02 15:32:59,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2020-12-02 15:32:59,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:59,166 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-02 15:32:59,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 15:32:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-02 15:32:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:32:59,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:59,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:59,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:32:59,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2020-12-02 15:32:59,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:59,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851506884] [2020-12-02 15:32:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-02 15:33:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:00,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:33:01,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:33:01,920 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:33:01,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:33:02,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 15:33:02,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:33:02 BoogieIcfgContainer [2020-12-02 15:33:02,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:33:02,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:33:02,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:33:02,159 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:33:02,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:31:44" (3/4) ... [2020-12-02 15:33:02,161 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:33:02,231 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:33:02,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:33:02,234 INFO L168 Benchmark]: Toolchain (without parser) took 79542.05 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 21.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,237 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:33:02,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.25 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 19.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.35 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.8 MB in the beginning and 40.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,240 INFO L168 Benchmark]: Boogie Preprocessor took 46.69 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 38.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,242 INFO L168 Benchmark]: RCFGBuilder took 1454.37 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 27.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,243 INFO L168 Benchmark]: TraceAbstraction took 77358.75 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 24.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,245 INFO L168 Benchmark]: Witness Printer took 74.09 ms. Allocated memory is still 56.6 MB. Free memory was 24.1 MB in the beginning and 21.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:33:02,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 28.9 MB in the beginning and 28.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 529.25 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 19.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.35 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.8 MB in the beginning and 40.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.69 ms. Allocated memory is still 56.6 MB. Free memory was 40.1 MB in the beginning and 38.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1454.37 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 27.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 77358.75 ms. Allocated memory is still 56.6 MB. Free memory was 27.3 MB in the beginning and 24.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.09 ms. Allocated memory is still 56.6 MB. Free memory was 24.1 MB in the beginning and 21.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 108]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] EXPR 1.0e300 [L16] static const double huge_floor = 1.0e300; [L16] 1.0e300 VAL [huge_floor=9094988921128908188] [L103] EXPR 1.0 [L103] EXPR 0.0 [L103] EXPR 1.0 / 0.0 [L103] double x = 1.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=9094988921128908188] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=9094988921128908188] [L28] COND FALSE !(j0 < 20) VAL [huge_floor=9094988921128908188] [L49] COND TRUE j0 > 51 VAL [huge_floor=9094988921128908188] [L50] COND TRUE j0 == 0x400 [L51] EXPR x + x [L51] return x + x; [L104] double res = floor_double(x); [L83] __int32_t hx, lx; VAL [huge_floor=9094988921128908188] [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=9094988921128908188] [L107] COND TRUE !isinf_double(res) [L108] reach_error() VAL [huge_floor=9094988921128908188] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 77.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 36.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 23 SDslu, 245 SDs, 0 SdLazy, 56 SolverSat, 3 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 24.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 35.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 9 QuantifiedInterpolants, 8282 SizeOfPredicates, 12 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...